Applied Chemistry

What do you say about consuming N2O ? I do not often but still and it's much better than alcohol , a Chemistry Professor gave me this idea And it won't harm your body or something like that either Anyway , would you do it ?

Hi All, First off, please forgive me if I posted this in the wrong place I need some help. I'm busy working on a project where I need a certain liquid, since I'm not a chemist but rather a graphic designer I tend to struggle. So I was hoping some bright spark here could help me out. What I need is an absolutely non toxic liquid (when I say non toxic, I mean you should be able to drink gallons of the stuff with no dire effects. This chemical needs to have certain qualities: 1.) As mentioned, 100% non toxic. 2.) This is the big one. It should react to air, what I'm after is that when exposed it turns into a coloured smoke. 3.) Odorless would be good, unless …

I have a school project where I have to make a water-pressure powered bottle rocket (made from 2-liter pop botle). I'm wondering, is there any fuel I could coat the inside of my "rocket" with that would ignite when hit with water? I guess my question is if water ignited propellants exist and how to create some...

I read a post exactly like this before. I'm a little confused with the measurements. KCL+NaNO3 ----> KNO3+NaCL It's a one to one ratio i know this. The approx molecular mass of KCL=74 and NaNO3=85 74/85=0.87 It says to get the proper amount of NaNO3 I need to multiply 0.87 by the mass of KCL that choose to use. Wouldn't it be the other way around? That I multiply the mass of the NaNO3 I use by 0.87 to determine the mass of KCL I need? Any help appreciated.

I herd about a company that recycles old electronics. First they desolder any valuable components, then they strip the wires to recycle the copper. But where my question comes in. They chop off the tabs( http://cgi.ebay.com/3-pounds-of-gold-computer-connections_W0QQitemZ330078091564QQihZ014QQcategoryZ164QQrdZ1QQcmdZViewItem) and grind less valuable ic’s to extract GOLD. So here’s the question how do you think they separate the gold from the silicone/plastic. Perhaps with the connectors the dissolve the plastic in acetone leaving behind the gold leaf? Maybe the use the hno3/hcl mix stuff? Does anyone know?

HOw much heat is transferred when 8 g of Nitrogen(N2) reacts with 15 g of Hydrogen H2 according to the following equation N2(g)+3H2--->2NH3(g) enthalpy change is 46.2kJ I have no idea where to start this problem

hello there to all respectable science lovers i would like to ask about the rate of a chemical reaction my question is: why rate expression for the reactants is taken with negative sign? e.g. A+B ----> C+D the rate expression for the reactants is dx/dt=-[A] i need some clarification as i teach chemistry thanks sincerely chemilover

I have a fair amount of Strontium Carbonate i'm willing to experiment with and was wondering whether it could be used as a starting point to give Strontium Nitrate My first thought was to react the Carbonate with Acetic acid to give Strontium Acetate, which in turn could be reacted with Kno3 to give Strotium Nitrate. However looking up solubilities, the values for Strontium Acetate/Nitrate and Potassium Nitrate are all quite similar so I can't think how one would easily to seperate the products. Any of you have any ideas?

anybody knows the chemical equation for this? I know bleach is NaClO and vinegar is CH3COOH. But I have no idea how to write a balanced equation for the two reacting with steel wool. Can anyone help me? Thanks

I was trying to produce Iron oxide through electrolysis. I used an old dc converter for an electric train set I had, a nail (that had rust on it already) on the anode. NaCl was the electrolyte. Well......the solution went from colourless to bluey greeny. After I wiped off the cathode (it was changing colour also lol! a kind of steely orange) I restarted the process, the solution was now turning orange. What the hell is going on?

I have just discovered that my HUGE stock pile of accent computer parts may actually be worth something. Old printed circuit boards, and high end boards are covered with GOLD!!!. My question is: How can I tell if a particular bored is made of Gold or something less valuable like copper?

can someone explain how to go about solving this? i dont want the answer..just help me on the steps thanks If all the H2O(g) in the atmosphere (assume it is 1% by volume) suddenly condensed to H2O(l), and all the enthalpy of this process was captured and converted to electrical energy, how long would this energy power a capital city?

Hello. Can common salt be separated from brine with a centrifugue? How do Cl- and Na+ ions densities compare to water molecules and are affected by hyper gravitational forces? Miguel

at what temperature does glass break?

I should know this really for the field I am in but since I am still a student, and we don't really cover it well, I have a question. Take Steel (Iron/Carbon), When it's brought to a temperature of "A" or so it changes phase. What phase, doesn't really matter I just know that at certian phases the structure of the metal atoms changes from like BCC, FCC and HCP to another. I was wondering what sets those states? Like is it an specfic energy level where the structure changes to HCP, or whatever? I am not making sense probably but I am sure one of you will get it.

says it all really

I`ve come across a complete Mystery for me whilst experimenting with red phosphorus. take a small quantity of RP (about 50mg) and put that in a test tube, then cap the tube leaving a small hole to inject CO2 gas into, thus removing any air. and then heat this over a flame, soon a gas will form and condense as an Orange powder on the walls of the test tube. it`s quite a Bright orange too, almost Peach colored when cold. has anyone got a clue what this stuff is???

What are some common chemical compositions for materials used very commonly. An example would be water is [math]H_2O[/math], salt is [math]NaCl[/math]. I'm not asking things like carbon dioxide ([math]CO_2[/math]) because that's not used by the average person (besides in breathing and photosynthesis). And obviously not the ones that I said above.

I cannot work out this 1H NMR spectra of d(+) carvone. The peaks have (from left to right) the relative intensities 1, 2, 5 and 6. This adds up to the 14 protons that carvone has, but apart from that I can't work out which peaks correspond to which proton environments. Thanks for any help.

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…

Hi People, we have taken today, in chemistry class, wot is called the phase diagram and as we all know that the density of water decreses as it changes to ice. a question came up in my mind...... why is that? why the density of water, and other substances of course, decrases with decresing temperature?? When i asked my teacher this question.... he explaind.... but i didnt understand:embarass: So, if someone can explain that to me please.

can someone solve this question: How many electrons are there in a 5000kg elephant? answer with reasoning please much thanks.................................................

Why is water a good material to use in a calorimeter?

i know quite a bit about chemistry but you might wanna put to put in lamens terms. i understand the basic concept but if i google it i get a definition which isnt really what im looking for. I heard somewhere that some guy used a device the size of a shoebox to do it but that info could be very wrong. Thanks for any info.

YT2095, you said a few years ago in the thread "where can i buy chemicals?" that you can get lithium from lithium batteries. However, ive heard that it's Lithium perchlorate instead. Is this correct, and if so how can i extract the lithium?