| Subject | Date Asked |
|
| well water | 10/10/2009 |
Q: MY HOME IS SUPPLIED BY WELL WATER AND I HAVE A 2300 GALLON HOLDING TANK WHICH SUPPLIES THE HOUSE. ...
A: All the information indicate that it may not be needed if the well is clear of bacteria. ...
|
| Geiger counter | 6/13/2009 |
Q: I am going to buy a geiger counter, and would like to knoe if the old yellow counters work withiut a ...
A: Unfortunately, it will depend on the model. Unless you are looking at one that can be demonstrated ...
|
| candlesticks and lead | 6/13/2009 |
Q: This may seem like a silly question, but I'm curious and uncomfortable, and it seems like much of my ...
A: Not to worry, a candle would never get that hot. More likely would be the candle could be ...
|
| reaction | 6/9/2009 |
Q: i had a shed built in my garden and each time i visit the place my inner ears feel swollen and full ...
A: Thinking about your situation for a couple of days. Two things stuck out. You mention in your ...
|
| Re: Random Noxious Fume Creation | 6/4/2009 |
Q: Dr. Boyter, I apologize for not answering some of your other questions in my replies. I was not ...
A: Many chemicals irritate the nose and not the skin. Start with black pepper. At this point, my only ...
|
| Random Noxious Fume Creation? | 6/1/2009 |
Q: I am grateful that you have made yourself available to help others. I hope that you can help me. My ...
A: One other thing to keep in mind in that this bottle of detergent may have sat in a hot warehouse too ...
|
| Random Noxious Fume Creation? | 5/31/2009 |
Q: I am grateful that you have made yourself available to help others. I hope that you can help me. My ...
A: Need some more info. You keep saying "odorless fumes" and "pick up the problem", but you never ...
|
| Random Noxious Fume Creation? | 5/30/2009 |
Q: I am grateful that you have made yourself available to help others. I hope that you can help me. My ...
A: Tell me more about the "free and clear". Is that the brand name? Who is the manufacturer? What ...
|
| Testing Water | 5/27/2009 |
Q: I am a grade 11 chemistry student. For my assignment i must test the water qualities of two ...
A: Sorry hit the wrong button. There are no easy tests that can be done n a high school lab. You ...
|
| acid to deteriorate flesh of leaf | 3/19/2009 |
Q: I purchase a gift item and re-sell it to gift shops. The item is a real leaf that has been treated ...
A: It could be several things including sulfuric acid. ...
|
| reactivity of fluorine | 1/28/2009 |
Q: I'm writing a novel that involves a very scientific and complex magic system. Will pure fluorine ...
A: Not reactive unless you add an electric spark. The reaction of F2 with water is actually a way to ...
|
| chemical equation | 12/17/2008 |
Q: What is the product result from Al2(OH)+HNO3?
A: Al2(OH) is not a normal form of aluminum hydroxide. It should be Al(OH)3(s) + 3HNO3 = H2O(l) + ...
|
| safety concern | 12/4/2008 |
Q: I am a teacher who recently did an experiment in a high school classroom. we placed a few small ...
A: Yes, there is a big safety concern. Any reaction of this sort must be done in a hood or at least ...
|
| Litmus solution | 9/9/2008 |
Q: Please let me know where you purchase litmus solution; or how to make it. Our daughter got a ...
A: You can get this in mall science stores, some Toys-R-Us, pet fish stores, pool and hot tub stores, ...
|
| chlorine corrosion on Stainless Steel | 8/1/2008 |
Q: I am creating a design for a Hydrogen Cell Generator (separate H2O through electrolysis). At ...
A: Yes, even stainless will corrode over time. There is also chloride in tap water. Elctrode will ...
|
| charcoal versus coal | 7/28/2008 |
Q: I've been reading about charcoal used as a soil supplement (i.e. terra preta). I've tried it on ...
A: Coal and charcoal are not the same thing, but they are similar. Coal is formed from organic matter ...
|
| alcohol evaporation | 3/27/2008 |
Q: My husband and I can't agree. Can a glass that once held alcohol still have "alcohol residue" on ...
A: I would suggest you are probably both correct. There are several points to make. 1. The ethanol, ...
|
| Fire Tricks | 3/24/2008 |
Q: Ok. I am a Youth Camp Leader and I was wondering if there is any safe chemicals that I can put into ...
A: You can buy crystal kits and premade pine cones. These can be found online or at fireplace stores. ...
|
| The true colour of water | 2/17/2008 |
Q: My friend (a Physics teacher) maintains that water (H2O) is an entirely transparent liquid, and that ...
A: The answer is of course "None of the Above". There are several problems discussing this. One, ...
|
| rubbing alcohol for litmus solution | 1/11/2008 |
Q: My 9 year old has just gotten a Chem 2000 chemistry set - we're making litmus solution for ...
A: Denatured alcohol is ethanol (drinking alcohol) that has had a chemical added to it so that you ...
|
| Chemicals Makeup | 9/20/2007 |
Q: if I want to find what the chemical makeup is in a liquid are there labs that can do that? Thanks
A: Sorry, I hit the wrong button the first time and you may get a reject of your question. If all you ...
|
| Carbon Dioxide | 7/10/2007 |
Q: I like to prepare desserts, and one dessert I saw on television was chocolate covered icecream. The ...
A: CO2 extinguishers will have an oil residual in the spray. It will be a very small amount, but I ...
|
| rubbing alcohol and water | 4/2/2007 |
Q: I am 10 and in the fourth grade. I read in a science book that I have (Pop Bottle Science by Lynn ...
A: The difference you should see is small. Unless you are using a very good graduated cylinder you may ...
|
| crisco label | 3/4/2007 |
Q: I have a can of crisco which contains as as its 2nd and 3rd ingredients "fully hydrogenated ...
A: Partially hydrogenated equals cis fat plus trans fat plus conjugated partially hydrogenated fat. I ...
|
| Disposal of hydrochloric acid | 2/2/2007 |
Q: my son is doing a science project in which he is comparing the dissolve rate of various otc pain ...
A: Two ways. Dilute it with water to a pH of 5-9 with water and put down the drain. Dilute with water ...
|
| gas emission | 1/21/2007 |
Q: What gas is emitted when aluminum melts/burns? Could that gas set off a CO alarm? Background: In ...
A: A couple of possibilities. It don't think it is the aluminum itself. 1. A gas range puts out CO if ...
|
| Bleach | 12/31/2006 |
Q: What is it about bleach or bleach-based cleaning products that makes it so good at making stuff ...
A: Bleach is an oxidant. It can react (oxidize) with stains to discolor or remove them, but it can ...
|
| moth balls | 12/27/2006 |
Q: We put moth balls under our house to repel rabbits. The good news is that this has worked. ...
A: These will just be guesses since I really can't see how your house is set up. First, there is ...
|
| Nuked Soap? | 11/30/2006 |
Q: Can you explain what's happening in this video? http://www.holylemon.com/NukedSoap.html
A: Soap contains water, both in the form of water vapor inside trapped air bubbles (particularly ...
|
| EQUALITATIVE AND EQUANITATVE | 11/29/2006 |
Q: What are they? i don't know what it is.
A: They are not english words and the second should be equanTitative. I would really need the context ...
|
| canned ether | 11/24/2006 |
Q: I have a pt. who recently had a stroke. He's a young guy (48) with a significant illicit drug ...
A: I assume you mean diethyl ether. Ether is still used in chemistry research and industrial research ...
|
| question?? answer =] | 11/21/2006 |
Q: are lead and pesticides polar or nonpolar substances??
A: Elements can not be polar since that requires two atoms. Lead in ion form is polarizable meaning it ...
|
| removing ink with water | 11/15/2006 |
Q: I am a video artist, and I am trying to create a certain effect, for an art project: I need a ...
A: Two thoughts. Not clear to me if you want the color to appear or disappear in the water. 1. Try ...
|
| Filtration method for soil solution | 11/10/2006 |
Q: Which method should be chosen for filtration of soil solution contaminated with heavy metal ions, ...
A: You need to define what you are trying to measure since what you describe is called "extractable ...
|
| Solvents | 11/7/2006 |
Q: Would you know which is the best solvent for dissolving sticky / glue'y substances, and where I ...
A: The first two to try are rubbing alcohol and fingernail polish remover. There is also a product at ...
|
| how to | 11/2/2006 |
Q: how do you separate water,sand,and oil I ask this question just for the sake of knowing so that i ...
A: 1. Filter the mixture through a paper filter (coffee filter) or fine strainer to separate the sand. ...
|
| chemical process to manufacture boron triflouride | 11/2/2006 |
Q: I have just applied for employment at a facility which produces this product. I would like a general ...
A: There may be new syntheses used industrially that are not public domain. The old lab way to make it ...
|
| plastic electric kettles = exposure to chemicals? | 11/1/2006 |
Q: I've searched around, but haven't found much. I just bought a plastic electric kettle and the water ...
A: My suggestion would have been to wash and dry the kettle two or three times before use and boil 10 ...
|
| 1+1 HNO3 | 10/31/2006 |
Q: Could you please explain me the meaning of 1+1 HNO3? I have just a little bit knowledge on ...
A: 1+1 normally means one part water and one part concentrated acid or other reagent. This is to ...
|
| pH | 10/27/2006 |
Q: Is there a liquid that will not affect pH paper, or a paper that is unaffected by neutral pH
A: It really depends on the pH paper. Most organic solvents such as hexane will not effect old ...
|
| Water | 10/26/2006 |
Q: I mentioned to someone that water is slightly acidic, and this is why I can't drink a lot of it ...
A: Had to think how to explain this. Water is so slightly acidic as compared to your stomach acid ...
|
| Dry ice and fog machine | 10/26/2006 |
Q: I am having a Halloween party this weekend and am faced with fog that rises too quickly. I need to ...
A: This could be very dangerous to your machine AND guests. Dry ice could break the machine, it could ...
|
| Sodium Hypochlorite Water Treatment | 10/18/2006 |
Q: I work as a Water Treatment Operator, the facility that I work at has 12 open bay filters that are ...
A: First, in such a situation, you should be talking to your employer about the lack of ventillation ...
|
| cold chemistry | 10/17/2006 |
Q: I am very new to the study of chemistry so I hope that you can help. What substances are cold but ...
A: You don't have many choices. You can freeze water that contains different levels of salts to get to ...
|
| chemicals - smoke detector. | 10/16/2006 |
Q: I actually have read a lot of information about smoke detector, and try to find an information the ...
A: Chemical vapors will set them off. A university dorm I know kept having alarms during the day. ...
|
| americium | 10/10/2006 |
Q: I'm in 7th grade science and I have an extra credit question on the board it is Why/how americium ...
A: From a simple google search. http://www.uic.com.au/nip35.htm Smoke detectors/ alarms are important ...
|
| Sulfuric acid and bleach | 10/5/2006 |
Q: I accidentally mixed sulfuric acid and bleach (during a plumbing fix) - what horrible smelling gas ...
A: Under the correct conditions, the sulfuric acid can cause more chlorine released from the bleach ...
|
| What elements are food made of? | 9/26/2006 |
Q: So does that mean that I am eating hydrogen in my food? I thought hydrogen was a gas, so why can we ...
A: Yes, you are eating the element hydrogen. It is just not in its elemental form. Look at this ...
|
| What elements are food made of? | 9/25/2006 |
Q: I just wanted to know what things like food are made of. Are they made of a certain element. Are ...
A: Foods are made of the same materials as plants and animals from which they come. You have carbon, ...
|
| Effect of impurities on b.p.t and m.p.t | 9/2/2006 |
Q: im a Sec.4 student from Singapore taking the Cambridge 'O'levels this year. The question i am ...
A: Let me give you a very simple explanation and you can read about Raoult's Law on your own. ...
|
| freezing water | 8/18/2006 |
Q: My wife and I have a bit of a disagreement as to which will freeze first. Hot water or cold water? ...
A: The answer is really it depends on the conditions of the experiment. Comparing hot water and cold ...
|
| Hydrogen | 7/31/2006 |
Q: Sir, this is for no schoolwork or anything related to the subject, I am a senior in highschool and ...
A: Hydrogen forms as H2 (by the way, nitrogen is N2, not N3). This is a good page to see what happens ...
|
| Brine expansion/diesel tank | 7/28/2006 |
Q: We have a site with a 10000 gal diesel tank. When diesel is added on a hot day, the high level ...
A: Information Needed and Suggestions What is the brine level versus the alarm set level and what kind ...
|
| hydrogen stuff | 7/19/2006 |
Q: what is h3o2? is it a liquid? and would it burn? also what is h5o2? thanks, kevin
A: Both of these compounds would be extremely unstable and probably only exist under special ...
|
| Chemistry | 7/10/2006 |
Q: How to grow bigger potassium aluminium sulfate with better control and specific experimental steps?
A: I'm not sure what procedure you have now, so I'm not sure what controls you already have in place. ...
|
| poisonous fumes | 7/8/2006 |
Q: Our neighbors have been making copper pipe pieces with garden hose inside them to burn on their ...
A: Burning any type of plastic or rubber in a fire can create smoke that contains toxic chemicals. ...
|
| chemicals | 7/7/2006 |
Q: Is nitrogen potentially dangerous when under pressure or put to a flame source?
A: Let's take the different situations. Nitrogen under pressure is dangerous (but rarely). If the ...
|
| Freezing temp. | 7/4/2006 |
Q: why do some chemicals freeze faster then other chemicals?? For example, MgCl2 and NaCl. Thank you
A: The freezing temperature of solid salts is just related to the different thermodynamic stabilities ...
|
| muriatic acid/ oxygen displacement | 5/22/2006 |
Q: I am a newspaper. We had two men die in a well. All that is known is that they put muriatic acid in ...
A: It could have been lack of O2, the HCl (muriatic acid) itself, or less likely the HCl could have ...
|
| s | 5/19/2006 |
Q: How do I remove a newspaper ink stain from linoleum?
A: This summarizes what I would try first http://www.doityourself.com/stry/floorlinoleum If these ...
|
| Fuses | 4/21/2006 |
Q: I am an author and am writing a book where the lead character needs to slow down the fuse of a ...
A: This is not my area at all so these are guesses in the MacGyver mold. Nail polish, spray paint, ...
|
| Bonding Energy | 4/14/2006 |
Q: A chemical bond with high bonding energy is stable or unstable? I was told that it is unstable, ...
A: The problem you have is that the statement/question is incomplete. You can describe bond energies ...
|
| Denatured Alcohol | 4/4/2006 |
Q: I work at an Aerospace Corp. Is it suitable or even better to clean PC Boards after soldering to ...
A: That is greatly going to depend on the board and type of flux used. I believe that only in-house ...
|
| colours | 3/22/2006 |
Q: I didn't really know who to address my question to, so if it's completely out of your field of study ...
A: If you mean orange in color,what happens is this (most likely). It is only orange when you have a ...
|
| Hiya sir i need some help... | 3/7/2006 |
Q: assuming the atomic radius of a bromide ion is 1.95 * 10^-10m This is how i done it i am not sure ...
A: Try this, especially if you have a small brother or sister. Steal their blocks and start stacking ...
|
| chemistry | 3/4/2006 |
Q: aerobic degradation of benzene what is the product? and its chemical structure?
A: Normal aerobic degradtion in activated sludge does give CO2 within 5 days(29.2%). Chemosphere 1985, ...
|
| material | 3/2/2006 |
Q: Is there any material called URATHENE? If yes, what is the different with POLYURATHENE?
A: Urethane has three definitions that you have to know the context to figure out which one to use. 1. ...
|
| Fire | 1/28/2006 |
Q: What comes first the smoke or the fire?
A: It depends on what you are burning, how you do it, and your definitions of fire and smoke. You can ...
|
| chemical reactions in nuclear power | 12/17/2005 |
Q: To Henry Boyter, I am a Photography student and this question is not for my homework and I have ...
A: See the folloowing. The data being sited is old and faulty. ...
|
| Chemistry | 12/12/2005 |
Q: I am planning a unit on chemisrty to teach at the elementary level. I jave to form a concept web ...
A: I'm not sure if you mean elementary as in simple or as in Grades 1-6. Look at the education links ...
|
| H2O2 reaction | 12/4/2005 |
Q: I would like to know if decomposition of H2O2 besides FeCl3(as a catalist) ,will produce Cl2 as a ...
A: If you want me to say zero is produced, I couldn't. I don't see a very favorable path to get it, ...
|
| what is "activity"? | 11/26/2005 |
Q: I was reading about the equilibrium constant for the self ionization of water K=[H30+][OH-] and the ...
A: Activity is really the mole fraction of each component (compared to total = 1) available for the ...
|
| Free databases of transition metals and their compounds | 11/14/2005 |
Q: Do You know any adresses of free databases of transition metals and their compounds available on ...
A: http://www.strem.com/code/index.ghc http://www.alfa.com/alf/index.htm ...
|
| Nicotine | 11/13/2005 |
Q: I'd like to know the Henry's constant (atm*m3/mol)for nicotine.I've spent much time for searching it ...
A: You will probably need to go to a university chemistry library and do a search there (books, ...
|
| All natural or not | 11/11/2005 |
Q: I was told that there was an all natural relaxer called Phytorelaxer. The ingredients listed on the ...
A: Yes, it is possible. The term "all natural" usually has no meaning, but in this case they just mean ...
|
| is bleach an acid? | 11/10/2005 |
Q: I am a student im in grade 11, chemistry my question : is bleach n acid? I am doing a research on ...
A: The problem is the word "bleach" which has no specific meaning other than "something that removes ...
|
| chemical reaction | 11/7/2005 |
Q: well they say there is no such thing as a stupid question so here goes... How come when you drop ...
A: http://www.newton.dep.anl.gov/askasci/mats05/mats05033.htm A couple of things you could try. 1. ...
|
| sodium hypochlorite | 11/6/2005 |
Q: I am not a student, I'm old. I work for a softwater service part time and we use a varity of ...
A: From http://en.wikipedia.org/wiki/Sodium_hypochlorite Hydrolysis is just the reaction with water. ...
|
| sulfuric acid | 10/22/2005 |
Q: I have a question for the sulfur in a battery. When you extract the sulfur from a lead-acid battery ...
A: No matter how old the battery, the sulfur will be present in some form (probably sulfates and oxides ...
|
| Mixing chemicals | 10/16/2005 |
Q: No, I am not a student. I want to know if I can mix a dilute (aqueous) solution of methanol and ...
A: Here are some online recipes. http://www.budget101.com/recipes/id182.htm ...
|
| vitamin e | 10/1/2005 |
Q: I need to find out how to dissolve powdered Vitamin E Acetate USP/DL. Is it water or oil soluable? ...
A: It appears that what you really want is the form already prepared to dissolve in oil. The powder ...
|
| Are these harmful? | 9/29/2005 |
Q: I am a huge fan of Pantene, but today I heard something rather alarming. Three of the chemicals ...
A: From a google search http://www.news-medical.net/?id=6719 Not that the one study that was done ...
|
| lab safety | 9/24/2005 |
Q: I have 3 lab safety questions that am not sure of. 1. What is the first thing to do when you ...
A: What is the context of the questions and what type of lab are we talking aboput? Here are the short ...
|
| Chemical Reaction | 9/24/2005 |
Q: I have searched google but did not find an answer. For a long time as an Planted Aquarist I have ...
A: Yes you would get HCl fumes in addition to the CO2. Probably a little hydrogen also. It wopuld be ...
|
| Polyester fiber residue | 9/18/2005 |
Q: I have a question. Dose polyester fill such as the the stuffing used in blankets and pillows leave a ...
A: It can depending on the processing. It will normally be a type of oil similar to detergents (very ...
|
| Water + ?? = Heat | 9/12/2005 |
Q: I'm a fellow AllExperts Expert, so if you need help with a computer issue, feel free to look me up! ...
A: There is really no such chemical because of your restriction of "safe" used in the context of ...
|
| h2o | 8/29/2005 |
Q: why is it that water comprising two highly inflamable gases can not burn?
A: 1. Oxygen is NOT inflammable. 2. Water is the result of complete combustion (adding of oxygen) of a ...
|
| invention | 8/7/2005 |
Q: I had an idea for a new invention, but I am not well versed in science. I was wondering if there ...
A: I think a doped glass or quartz mirror will do it. The dopant will scatter the laight so much it is ...
|
| Are the chemicals in tea harmful when combusted? | 7/30/2005 |
Q: I know smoking anything is harmful, but I was asking specifically about tea. Is there anything in ...
A: There would be cyanide, ammonia, amines, aldehydes. Cigarettes have over 400 ingredients present in ...
|
| Mobil Process. | 7/14/2005 |
Q: In the manufacuture of methanol in New Zealand. A process known as the Mobil Process is used. The ...
A: I don't know the formula, and that is because it is not a single homogeneous compound. Is is made ...
|
| Water/Hydrogen/Oxygen | 7/10/2005 |
Q: Well, I'm going to grade 9, but this isn't for school. My friend asked me, and I didn't know, and ...
A: Water is only formed when a spark is applied to oxygen and hydrogen. It doesn't happen without the ...
|
| perchloric acid | 7/8/2005 |
Q: I need to know how to make 1000mL of 1M perchloric acid from concentate that only gives the MW, ...
A: The calculation I gave you did give volume (mL). You will need to adjust for the 70.5%. This table ...
|
| perchloric acid | 7/7/2005 |
Q: I need to know how to make 1000mL of 1M perchloric acid from concentate that only gives the MW, ...
A: 1M is 1 mole/liter You want 1 liter so you need 1 mole 1 mole X molwt (grams/mole) = grams acid ...
|
| Hi Henry, I saw someone using... | 6/10/2005 |
Q: I saw someone using a cast iron BBQ (hibachi) and I was wondering why cast iron holds up better in ...
A: We have to use the same terms. Cast iron and steel are part of the same family of alloys with iron, ...
|
| DRINKS | 6/10/2005 |
Q: What percentage of alcohol do I have if I a mixture of i bottle 70cl of Vodka,40% alc;70cl of ...
A: I have reviewed your comments. Note that you did not ask for a detailed explanation, you did note ...
|
| Science | 5/16/2005 |
Q: What are some of the products of combustion of candle wax?
A: CO2 and water of course, but it is candle dependent. The wax is a high weight polymer in most cases ...
|
| sublimation | 5/13/2005 |
Q: hope to find u in good health .Sir i have a question that why some chemicals directly evaporates ...
A: Look at http://wine1.sb.fsu.edu/chm1045/notes/Forces/Phase/Forces06.htm ...
|
| Mold | 4/29/2005 |
Q: -------------------------I went on the internet to find out what ratio to mix bleach to kill mold ...
A: The studies that started that were for surfaces made of Douglass Fir. Other studies show that ...
|
| Mold | 4/28/2005 |
Q: I have black mold on my basement crawl space wall (cement block). I would like to make a home made ...
A: Bleach actually kills the mold if applied correctly. That is what the bleaching indicates. ...
|
| chemicals and usage | 3/22/2005 |
Q: I have recently became a teacher and chemistry was not a subject of choice..but a subject of school ...
A: You should not touch any chemicals if you are not qualified. High school labs contain many high ...
|
| flash point of some chemicals | 3/8/2005 |
Q: i had searched google & altavista but could not find flashpont of some chemicals. i am an insurance ...
A: Do your search by "xylene MSDS" for example. It is on the MSDSs you will find them. Also note, it ...
|
| laundry | 3/4/2005 |
Q: My wife recently told me to dry her clothes in the dryer on a medium heat instead of high heat. she ...
A: 1. Your wife is always correct. 2. Depends on the heat of your dryer and the fabric. Most do not ...
|
| Chemistry ph strips | 2/28/2005 |
Q: I am conducting an experiment on which antacid neutralizes the most stomach acid. I am using ...
A: Close. Weigh and add potions of the ground material until you get a certain pH. You may need to try ...
|
| Chemistry ph strips | 2/28/2005 |
Q: I am conducting an experiment on which antacid neutralizes the most stomach acid. I am using ...
A: Grind separately and measure the amount of powder you have to add to the vinegar to get to a set pH. ...
|
| laundry | 2/17/2005 |
Q: You say there is no peroxide. The lable on my container says h2o2. Go to google and type in h2o2 ...
A: H2O2 at a level that would do any good for laundry is a dangerous chemical and can damage clothes. ...
|
| laundry | 2/17/2005 |
Q: We do a small amount of comercial laundry on the side and I saw that there is an expensive machine ...
A: There are two types. One just bubble very fine air bubbles into the water. The other uses a ...
|
| bleach | 2/4/2005 |
Q: As a preschool teacher I need to know if the bleach in my center is still killing germs? It is kept ...
A: Bleach can last for months if not years, depending on storage conditions, but to know its exact ...
|
| chemical elements in the human body | 1/31/2005 |
Q: what are the 24 elements in order from simplest to most complex???
A: Define "simple" and "complex", they have no common meaning with elements so the question can not be ...
|
| hydrated lime vs 50% caustic | 1/27/2005 |
Q: We are looking at switching to 50% caustic for pH adjustment in the digesters of a wastewater ...
A: The water is dependent on what you are buying. Most lime is 90-95% Ca(OH)2. It is not a hydrate. ...
|
| Freezing water | 1/24/2005 |
Q: Does hot water freeze faster than cold water? My hot water pipes were not working for a several ...
A: Unless there is blockage in the pipe that ice can form on, cold should freeze faster, but not so ...
|
| Corrosion | 12/31/2004 |
Q: I have aluminum wheels on my car. There are (I assume) lead weights on the wheels for ballancing. ...
A: Couple of things. 1. You should have coated lead weights on the wheels which do no hurt the ...
|
| Neoprene | 12/21/2004 |
Q: My wife works in a field that is constantly exposing her hands to cold water. She has to immerse ...
A: Latex and neoprene are different, but related. Neoprene is a synthetic rubber that has a similar ...
|
| LN2 | 12/19/2004 |
Q: I have a question, Everyone has see nthe banana trick with Liquid Nitrogen. Could a flower ...
A: Liquid nitrogen is EXTREMELY dangerous and should only be handled by trained professionals. A ...
|
| Weird substance that reacts with wood | 12/10/2004 |
Q: The reason I'm asking this is because I want to know what the white powder was that my teacher used. ...
A: If they didn't tell you, they had a reason. I imagine, the main being safety, which is the same ...
|
| PH levels Effect on iron and copper | 10/25/2004 |
Q: At what PH levels does iron and copper start to corrode? I'm doing a expirement for my 6th grade ...
A: These will corrode at almost any pH. The key is time. Lower pHs will do it faster. Some may be ...
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| Thermo question... | 10/17/2004 |
Q: Technically, this is school work...but not a homework or test question. This is just something I'm ...
A: See if these two websites give some clarification. You are correct that chemists can confuse the ...
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| acid | 10/6/2004 |
Q: Do there exist acids strong enough to eat through solid rock? I'm asking this because I'm currently ...
A: Yes there are such acids. Hydrofluroic and perchloric for example. The problem is that it isn't ...
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| mint flavor | 9/21/2004 |
Q: why does mint or menthol make your mouth feel cool?
A: Check out http://goodhealth.freeservers.com/MentholColdReceptorsCalcium.htm ...
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| microwave combine with smoke detector | 9/21/2004 |
Q: how many times have we burnt our popcorn? Many! that's y i want to design a microwave that ...
A: There would be no commercial detector that would work. First CO2 is present all the time and ...
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| paint removal | 9/20/2004 |
Q: What is the best chemical to remove graffiti (enamel paint-mat finish paint) from bare brick?
A: Go to Lowes or Home Depot. You may need to go to a janitorial supply. They sell graffiti removal ...
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| chemical makeup of water purchased in a plastic container | 9/7/2004 |
Q: I purchased water in plastic containers and used it in a water heating electric kettle. I never ...
A: Unless you try the water in another pot, don't jump to conclusions. It could be that the kettle ...
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| chemical makeup of water purchased in a plastic container | 9/6/2004 |
Q: I purchased water in plastic containers and used it in a water heating electric kettle. I never ...
A: Without seeing and testing it, there is no way of knowing. Take some of the substance to a local ...
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| Chemistry hon | 8/29/2004 |
Q: Is spagetti sauce a heterogeneous or homogeneous mixture. i have a test coming up and my mother is ...
A: To be homogeneous, you have to not be able to see distinct different parts in the solution. With ...
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| MgS | 8/4/2004 |
Q: I'm a student, 10th grade taking chemistry. I was wondering. How could I get sulfur from MgS?
A: Theoretically you could electrically or chemically oxidize it, but first you have to get it into ...
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| Effects of polybrominated diphenyl ethers in young children | 8/2/2004 |
Q: In answer to your questions: My daughter was tested for lead at her 18 month check up and her ...
A: Sounds good. You are probably the one in ten thousand or more households that takes such ...
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| Effects of polybrominated diphenyl ethers in young children | 7/28/2004 |
Q: I have a two and a half year old toddler in a family day care. She receives excellent care except ...
A: This is of course just my opinion. Read the disclaimer below. LEAVE YOUR CHILD WHERE SHE IS ! ...
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| cleaner | 7/22/2004 |
Q: I do a small amount of comercial laundry and had an idea to add oxygen to the water. I guess I ...
A: Oxygen is a very poor oxidizer. Oxyclean is peroxycarbonate which is CO2 and peroxide. Peroxide is ...
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| Internal Frosting of Incandescent Bulbs | 7/21/2004 |
Q: Still confused. Your links discuss Mercury lamps and fluorescent lamps, when what I wondered about ...
A: Sorry I confused what your question was asking. Incandescent bulbs were normally etched while some ...
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| Solubility of caffeine | 7/17/2004 |
Q: I heard that making decaffeined tea is easy; just soak tea leaves in hot water for 20-30 seconds, ...
A: No first hand knowledge, but sound like poor science but could be true. 20-30 seconds does not ...
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| anti-perspirant | 6/21/2004 |
Q: I'm 46 yo lay person interested in anti perspirant ingrediants. My pharmicists told me that aluminum ...
A: aluminum chloride = AlCl3 aluminum chlorohydrate = [Al2(OH)5Cl]x-2H20 aluminum ...
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| Chemical Attributes | 6/18/2004 |
Q: I am a commerce student at the University of Toronto and I do not know very much about chemistry. I ...
A: Do a google search using many combinations of key words first, so you can get your question out of ...
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| coca cola and sodas | 6/17/2004 |
Q: Can you explain why more bubbles are created when: 1. I drop an ice cube into my cola 2. I shake the ...
A: 1. Release of carbon dioxide from the solution of cola due to formation of bubbles around the ice. ...
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| holding tank water | 6/3/2004 |
Q: I would appreciate your expertise on this matter. I have a 1500 gallon water holding tank that feeds ...
A: The viscosity will change little unless you have to add a "ton" of chemical. If it is municipal ...
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| reactions | 5/13/2004 |
Q: when a reaction happens all of the bonds between the molecules are broken then the atoms rearrange ...
A: It happens all the time. It is called an equilibrium. A + B = C + D There is nothing that says ...
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| Source for chemical | 5/3/2004 |
Q: I do a little gold prospecting from time to time. I seperate my materials at home. I have recovered ...
A: Try these http://www.sciencecompany.com/home.cfm http://www.cynmar.com/ If they sell it to you, ...
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| petroleum ether | 4/29/2004 |
Q: My name is James Rogers. I am a haz mat technician with the Sedgwick County Fire Dept Haz Mat Team. ...
A: The term ether just means volatile, from the Greek work for ignite. Since ether is a mixture like ...
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| fire retardant treatment of feather beds | 4/23/2004 |
Q: I tried to destroy a very old feather bed (that my dog had been using) by burning it. I used a ...
A: The feathers may not be treated at all. Treated feathers would not actually burn, just smolder. ...
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| Foul smelling liquid | 4/18/2004 |
Q: -I'll bet this is one you've never been asked. -One far side of my yard is backed up to a wooded ...
A: Use the commercial mix. Other chemicals may be cheaper per unit, but you will need to buy gallons ...
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| Fire | 4/6/2004 |
Q: I am writing a novel in which the hero needs to escape by setting a fire using the liquid which ...
A: Either will do, except formaldehyde 37% is either mixed with water/methanol (48/15%) (fp=50C for ...
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| CO2 in a 2 liter container. | 3/22/2004 |
Q: .. My roomate and I are in the middle of a dispute about 2 liters of soda. She believes that it is ...
A: I don't think it makes a difference. He is correct that the CO2 level in the cola will stay higher ...
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| Science | 3/8/2004 |
Q: How is copper taken from a compound to be by it self. This is not school work,
A: Depends on what you mean by "by itself". Copper compounds can be treated with strong acid to ...
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| pH/Buffer System | 2/24/2004 |
Q: I am looking for an anti-buffer substance or chemical that when added to an aqueous mixture will ...
A: You were adding a buffer with citric acid also. Citric acid is a well known buffer. Buffers are ...
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| potassium permanganate | 2/18/2004 |
Q: I study in University and this is my first year. You can be sure that I've searched google and other ...
A: The following is taken from this given website. Permanganate is very sensitive to several types ...
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| Oil slick hazard | 9/11/2003 |
Q: I would be so grateful if you could clarify the following issue for me. Recently I went for a ...
A: A probablity type answer would cost much time and thousands of dollars. A more practical approach ...
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| quicklime | 9/8/2003 |
Q: Henry Boyter, Hello, my name is Dustin, I am 15 years old and I live in Carmel, Indiana. I read a ...
A: A chemical compound with the formula CaO which is a whitish, odorless solid that does not dissolve ...
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| blown ceiling cleaning | 6/7/2003 |
Q: I talked to a man yesterday about spraying our old blown, popcorn type ceilings to whiten them. It ...
A: This is a very touchy job to do correctly without the ceiling falling off. You could try bleach but ...
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| water | 5/20/2003 |
Q: How come, even though water is colorless, we can see it in a clear glass-where it is .
A: You are observing the the boundary between the glass and water and the air and water. The water is ...
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| Liquid Nitrogen | 4/8/2003 |
Q: I have a question on the use of liquid nitrogen for cars. I know they have used liquid nitrogen t ...
A: You will notice that the current train versions are either very short track systems or demo models. ...
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| chemical name | 3/21/2003 |
Q: Would you know the chemical name for the substance typically refered to beta hydroxy acid? I've ...
A: Short answer is that it isn't one thing. It is a description. Sort of like saying flavoring or ...
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| chemical composition | 12/3/2002 |
Q: Could you, would you inform me of the chemical make-up of the product "Oxyclean?" We have all seen ...
A: sodium percarbonate/sodium carbonate mix which is a stabilized mix of sodium carbonate and hydrogen ...
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| chemical compounds | 11/11/2002 |
Q: This is a "nugget" from my teacher. It is not required but i like to do them. After searching many ...
A: Around 20 million not counting sequences. Around 5 million commercially available. ...
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| Isopropyl vs. Denatured Alcohol | 11/8/2002 |
Q: Is there a chemical difference between Isopropyl and Denatured Alcohol. (Yes, I know that you don't ...
A: Denatured alcohol is ethanol (drinking alcohol or grain)that has been contaminated so you can't ...
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| Making Layered Mocktails | 5/11/2002 |
Q: I was wondering how to make mocktials with distinct layers. I know that you can make layers using ...
A: It would work, but there would be so much you would have to add it would taste terrible. Think ...
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| oxygen concentration of water | 5/6/2002 |
Q: Suppose we have 2 water samples; how can we compare the oxygen concentration of these samples with ...
A: There is no simple method in the two kinds of DO tests. The easiest is of course the membrane ...
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| chemical | 3/20/2002 |
Q: I have a waterbed and have to add a solution every year to keep the water from going off. This ...
A: Keep buying the commercial product. The chemical ingredient listed is a family not a specific ...
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| Getting back original metals | 1/31/2002 |
Q: My soon-to-be five year old has stumped me...hoping you can help. If you take metals and melt them ...
A: The way to do it is to first dissolve the metal object in strong acid (very dangerous unless ...
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| Na + Cl = ??? | 9/24/2001 |
Q: I'm the dad of a very curious four year old (Alex) who's latched onto the periodic table like a pit ...
A: The activation energy is too high. That is the enrgy that it takes to get over the hump to where ...
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