| Subject | Date Asked | Expert |
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| chlorine corrosion on Stainless Steel | 8/1/2008 | Henry Boyter |
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 ...
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| charcoal versus coal | 7/28/2008 | Henry Boyter |
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 ...
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| paint thinner | 6/23/2008 | Herytoh |
Q: how to make paint thinner for automotive used and common used for wood furniture? is there any ...
A: Different type of paintw will need different type of thinners. The thinners are mainly consist of ...
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| Thinner Preparation | 4/5/2008 | Herytoh |
Q: Heryoth , Kindly advise how to prepare the thinner used in paints . Especially furniture finish . I ...
A: Different type of paints will need different type of thinners because the function of the thinner is ...
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| alcohol evaporation | 3/27/2008 | George Maxwell |
Q: My husband and I can't agree. Can a glass that once held alcohol still have "alcohol residue" on ...
A: Even a quick rinse with cold water would remove most traces of alcohol (certainly below the level ...
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| alcohol evaporation | 3/27/2008 | Henry Boyter |
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, ...
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| alcohol evaporation | 3/27/2008 | George Maxwell |
Q: My husband and I can't agree. Can a glass that once held alcohol still have "alcohol residue" on ...
A: and thanks for your question. It is possible for some remnants of alcohol to remain in a glass for ...
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| Fire Tricks | 3/24/2008 | Henry Boyter |
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. ...
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| REG : mineral water | 3/11/2008 | George Maxwell |
Q: We use to consume boiled mineral water.. is it harmful to human body if we consume boiled mineral ...
A: There is no health hazard to consuming boiled or fresh mineral water (unless, of course, the source ...
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| pH | 3/2/2008 | George Maxwell |
Q: I am doing a science project involving pH. I have individual plants and need to know how to raise ...
A: and thank you for your question. The normal method of doing this would be to add a set amount of ...
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| chemical reaction on smoke detectors | 2/21/2008 | George Maxwell |
Q: Are there any household cleaning chemicals that would cause the smoke detector to continuously chirp ...
A: and thanks for your question. No, there are no chemicals that will do this: a smoke detector works ...
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| Test the efftective of Alocholout product | 2/20/2008 | George Maxwell |
Q: i'd like to ask is thete any method can test the effective of Alocholout product which is supposted ...
A: The only reliable method for determining methanol in ethanol concentration is using instrumental ...
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| Test the efftective of Alocholout product | 2/19/2008 | George Maxwell |
Q: i'd like to ask is thete any method can test the effective of Alocholout product which is supposted ...
A: and thank you for your question. I don't know of any detailed test procedure for this product. ...
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| The true colour of water | 2/17/2008 | Henry Boyter |
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, ...
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| science - evaporation of liquids | 2/10/2008 | George Maxwell |
Q: i am in sixth grade and i chose my science fair project this week i want to measure and see why 4 ...
A: and thanks for your question. There are a few key factors that you might want to think about in ...
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| Injuries caused by reducing agents? | 2/9/2008 | George Maxwell |
Q: How do powerful reducing agents injure human skin? I know that a reducing agent will donate ...
A: and thanks for your question. You're quite right that reducing agents donate electrons, and ...
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| Chemistry | 2/7/2008 | George Maxwell |
Q: What happenes to napthalene (C10H8) when it is heated? Does it melt?
A: and thank you for your question. Napthalene at atmospheric pressure normally sublimes (it turns ...
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| olbus oil | 2/2/2008 | George Maxwell |
Q: im a regular user of my sauna after the gym and have been using olbus oil on the coals with water ...
A: and thank you for your question. I've never heard of a problem with olbus oil, and think you're ...
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| urine causes vacuum in plastic bottle(sorry, it sounds wierd I know) | 1/12/2008 | George Maxwell |
Q: One day I urinated in a plastic bottle. I meant to properly discard the contents soon after in the ...
A: and thanks for your question. This effect will work with any warm liquid,and relies on the fact ...
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| rubbing alcohol for litmus solution | 1/11/2008 | Henry Boyter |
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 ...
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| chemicals for stone eating | 1/8/2008 | George Maxwell |
Q: please tell me any chemical or acid is useful to drill holes by eating the stone using from the ...
A: and thank you for your question, The answer depends on the sort of rock you're using. Hydrofluoric ...
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| interaction acid-caustic | 1/4/2008 | George Maxwell |
Q: I know that hydrofluoric acid can be very dangerous. It was prohibited from use in industrial ...
A: and thanks for your question. You're quite right; Hydrofluoric acid is extremely dangerous. ...
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| Smoke & Alarms | 1/2/2008 | George Maxwell |
Q: I would like to know why cigarette smoke activates fire alarms but marijuana smoke does not. What ...
A: Both types of smoke can activate a smoke detector - it's just that in some cases, a detector ...
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| no-suds non-slippery dishwash fluid | 12/29/2007 | George Maxwell |
Q: How do you produce a no-suds and non-slippery dishwashing fluid? I need a no-suds or at least ...
A: The bubbles in washing-up liquid don't actually take part in the cleaning - manufacturers add ...
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| Chemical Reactions | 12/18/2007 | George Maxwell |
Q: I'm sure a lot of people have heard of the idea that mixing ammonia and bleach produces deadly ...
A: and thank you very much for your question; apologies for the delay in answering. It's never a good ...
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| Pet urine & sauteed onions | 12/16/2007 | George Maxwell |
Q: My son has a roommate who owns two chihuahuas, neither of which is house-trained. He called me today ...
A: I think it's probable that the "tear gas" was simply from the onion. Onions contain sulfur-based ...
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| water in oil | 12/14/2007 | George Maxwell |
Q: When we have water and oil we actually have three phases: water,oil and a solution of water and oil. ...
A: The "third phase" you mention isn't a solution (if it was, you'd have to distill the mixture to ...
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| paint hardner | 12/9/2007 | Herytoh |
Q: i want to know the tds of a good top coat hardener for wood and application method.its properties ...
A: It is difficult for me to answer your question because I do not know what is your definition for ...
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| Hydrogen buring | 12/5/2007 | George Maxwell |
Q: If i were to use combustion in a sealed environment by inserting a hydrogen/oxygen mixture would ...
A: You're quite right that, in a "pure" eviornment, Hydrogen and Oxygen will only produce steam, and in ...
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| Hydrogen buring | 12/5/2007 | George Maxwell |
Q: If i were to use combustion in a sealed environment by inserting a hydrogen/oxygen mixture would ...
A: and thank you for your question. The answer, generally, is yes: the physical force produced by the ...
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| Oxygen | 11/22/2007 | George Maxwell |
Q: When something is burnt what happens to the oxygen that is fueling the combustion process? Some is ...
A: and thanks for your question. Yes, you've got the right idea with the "forming CO2" thing. "Fire" ...
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| Dextrose and Saline | 11/19/2007 | George Maxwell |
Q: I work in a hospital and we use various intravenous fluids. I don't know why Normal saline(0.9% ...
A: and thank you for your uestion. You're correct in saying that both saline and dextrose soltions are ...
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| acid | 11/19/2007 | George Maxwell |
Q: what is caustic acid?
A: I've never come accross the term "caustic acid" : "caustic" usually refers to an alkaline material ...
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| decomposition of cynide | 11/16/2007 | George Maxwell |
Q: how can we degrade cynide using sodium hypochlorite? ple give reaction
A: and thanks for your question. If you're trying this for real, make sure you're supervised by an ...
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| compounds of mercury | 11/15/2007 | George Maxwell |
Q: I am a fellow "expert". I answer questions in the physics category. I need help with a personal ...
A: Re: the build-up of concentration: the build - up occurs through the whole food chain. A single fish ...
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| compounds of mercury | 11/15/2007 | George Maxwell |
Q: I am a fellow "expert". I answer questions in the physics category. I need help with a personal ...
A: and thanks for your question. I hope the following is useful, even though it's not complete. 1) In ...
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| If water has a chemical in it will it change its freezing point | 11/13/2007 | George Maxwell |
Q: does salt or sugar water freeze at a different time than regular water?
A: and thanks for your question. Pure water at atmospheric pressure always freezes at O degree ...
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| freezing point | 11/5/2007 | George Maxwell |
Q: We have a 500 gallon septic tank buried and filled with water. How many pounds of a salt is ...
A: I don't have the facility to test down to -26 degrees centigrade, but I'm carrying out a few very ...
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| freezing point | 11/4/2007 | George Maxwell |
Q: We have a 500 gallon septic tank buried and filled with water. How many pounds of a salt is ...
A: and thanks for your question. Just a check that you wanted the answer for minus 15 degrees ...
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| Prices for chemicals | 10/25/2007 | George Maxwell |
Q: I was wondering if you would be able to give me an up to date price, or know where i would be able ...
A: The answer depends on a range of things, including the purity of the methanol you buy and of the DME ...
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