Applied Chemistry

I have obtained about 2.5 litres of battery acid strength sulfuric acid which has been filtered. I tried to concentrate it by boiling it in a stainless steel pot outside. After about 5 minutes of heating the acid turned cloudy white and started producing noxious fumes which were not visible, the acid hadn't started to boil yet. The acid started to react with the metal pot and after about 10 mins it had changed from being cloudy white to a pale green/torquoise colour. The inside of the pot now has a black coating of somthing. What I think happened is that when the acid was heated it reacted with the metal, maybe the chrome? But what I wish to know is what has form…

Right now I'm in my school trying to measure the rate of reaction of propanone and iodine... I've added sulphuric acid as a catalyst and even though I'm waiting patiently for something to happen the colorimeter keeps recording the same absorbance... (I've been running my first experiment with no success for 45 minutes already..) I have to do 5 different experiments varying the molarity of iodine and propanone like this: iodine propane 0.01 0.01 0.01 0.02 0.01 0.03 0.02 0.01 0.03 0.01 Am I waiting in vain? what d…

I have some finely-divided iron disulfide, possibly mixed with some other things, that I wish to 'dissolve' away -- or at any rate remove from the mix. What would be a good way of doing this using fairly safe chemicals? (I.e., not concentrated nitric acid, although H2SO4 or HCl are possible.) Among the things that may be left behind are SiO2 and microscopic amounts of gold, neither of which I'm concerned about being affected by the solvents. If I heat FeS2, won't it break down and leave me with elemental Fe and SO2? If so, perhaps then I could act directly on the iron and make it into a soluble compound that could be dissolved and washed away..

Looking for a way to create a molecule and then spit out molecular coordinates in pdb format help please I should mention I am using a mac open source software is welcomed

Hello. I was just wondering if any of you guys would be cool enough to tell me or give me some links to how to read what diagrams like the one below are called, and what the different bonding signs mean. Im kind of new to chemistry, but i crave to learn some. thanks.

Special situation, car rust on door, thought of hydrochloric acid, brush on , wait, then rinse with bicarb, then water, then dry asap. But, HCl attacks the "good clean" steel next to rust, so is there a better alternative? Oxalic? isnt oxalic slow reacting? Phosphoric just converts the rust to iron phosphate, and does not "remove" it. Id rather remove it, dissolve it, rinse it away, but afraid of further good/intact steel digestion in the process. Tips appreciated.

Someone asked me about this solvent but i dont exactly what it is. He showed some videos showing that this solution can brittle an iron nail in a few seconds. I wonder what kind of Chemical Solution is it. Can anyone help me about what is it and how its made? Thank you.

helpppppppp! whats the strongest and most dangerous chemical, both organic and inorganic? some says its hydrogen sulphide.is it true? if so y that chemical is that strong to affect the body?

I have lots of leaves piled up under my deck, which extends from the back of my house and is elevated about 4 feet off the ground. The deck has wooden trellices from the dirt up to the floor level to enclose the empty space, and a lot of leaves have accumulated in this space. If one corner of the space under the deck is about 3 feet high with leaves, does this create a fire hazard? If so, would smoothing them out to the rest of the space, such that they were not elevated much above the ground, make it safe? Thanks in advance.

Imagine a perfect steel cube in 2 halves with a tiny cavity in the center of it, enough to fit perfectly a quantity of explosive. these steel halfves are then bolted together perfectly, and the explosive is of a quantity not large enough to rupture the steel container or allow any gasses out. the products of detonation from this explosive X are Carbon Dioxide and Nitrogen, only. what will happen when to explosive X when triggered (I`ll avoid the term detonate as I`m uncertain if it will). I have many ideas in my head as to what will happen, ranging from detonation and liquification of the gasses, to compressing the inner cavity of the steel into a new subs…

I need the answer for this issue because i cannot find it on internet, if this is possible or not. Or the difference between a neutral atom and one that is ionized, about the heating and freezing. The importance is when it should not or there is a difference, then we could ionize oxygen atoms and prevent them from freezing, that would be nice for splitting molecules. When they should freeze, you would say that + and - frozen atoms will attract themselves like a magnet...

i thought an idea graphite is a conductor of electricity .....how about making a circuit by drawing with a graphite pencil

Just watched the least creditable show on discovery channel "Myth Busters" And they talked about mystery bullets. A bullet whos properties prevent it from leaving any ballisticks evidence. Like something made of ice. They did tests with frozen H20 bullets which weren't able to reach their target bue to vaporization. So I was wondering if any other substances could be frozen fired out of a gun and do damage to a target then "Dissapear". Also I'm wondering if you could have a bullet made of a highly reactive metal like Rubidium which would react with the victms blood. Could this work?

Hi, i have a mixed acid sample of HF+HCl+H2SO4 and i need to find out the individual concentrations of the 3 acids. How can i do so? Urgent help needed. Thanks.

hello everyone, I was trying to do a practice exam last night and come upon this question about rate determining step, I'm confused on how you can tell which step is the rate determining step from a table that gives you rates and concentrations for individual reactant, here's the question: consider the following data for the reaction: H2O2 + 3I + 2H -> I3 + 2H2O [H2O2] [H] Rate I. 0.100M 5.00E-3M 1.00E-2M 0.137M/s II. 0.100M 1.00E-2M 1.00E-2M 0.268M/s III. 0.200M 1.00E-2M 1.00E-2M 0.542M/s IV. 0.400M 1.00E-3M …

Is there a way that you can tell how concentrated a solution must be for it to be saturated? For example, suppose I want to make a saturated NaCl solution in water. How do I know the maximum molarity possible and thus how much NaCl to use?

as title indicates... I'm trying to make a few cracks in a giant rock i have... any ideas how to do with household chemicals/materials? it doesn't have to be a chemical method, physical /chisels/ any other basic method would work

From my grandpa era tricks; when the windshield wipers stopped working, rubbing a split potato onto the glass allowed to see very well until those old vacuum motors/hoses get fixed. And it works great. What is in that juice? Some surfactant ? Never tried as defogger for my scuba mask. Would it work ?

where can i buy calcium oxide powder? thanks in advance to any replies

I know that this is a very advanced question, but this was asked in my Chemistry II class today, and the teacher said that he did not know the answer, nor had he ever thought of the question. And so I was curious and wanted to ask this question to someone who knows chemistry and about protons and electrons better than I. If electrons have a smaller mass than the proton, than how do they have the same charge? I do know this, that charge is related to the quarks, and that up quarks have +2/3 charge, and down quarks have -1/3 charge. If an electron has -1 charge, than they would have to contain 3 down quarks. The proton has two up quarks and one down quark. Both have…

Why is the covalent triple bond in diatomic nitrogen so strong? Why is it that this covalent bond is so strong when covalent bonds usually are week?

Hi. Too many years ago, a knowledgeable chemist engineer told me that an iron object would hardly rust ever again if treated with caustic soda. What is the treatment? dipping in a solution? media blasting? burying the metal in it? what concentration, or else ? Miguel

what would the variables and controls in this experiment be? What makes apples and bananas go brown?

...out of curiosity, in a molecule, how does the polarity of a molecule determine the type of intermolecular force present?

Could some one tell me if this reaction would work or any potential hazards. MgSO4 + NaCl --------- MgCl +NaSO4