the source is liquid and i want it by chemical way and spectrometer
120869
There are a number of methods. One way is to crash out the cadmium as an insoluble salt and than weigh that salt, to back-figure the cadmium. The problem there is that you would have interferences from many other metals.\n\nSpectrometrically, you could accomplish it using an ICP or simple atomic absorption. The later might require the use of standard addition, particularly if your matrix is complex. You figure out the absorbance after adding known amounts of cadmium.
251466
http://www.chemistrystore.com/index.html\nhas ingredients and recipes
319335
1.) do your own homework\n2.) this is the computer forum, not high-school chemistry.  Next time post to the right furom.
559624
How about something dealing with providing potable water or water purification... that's a heck of a subject and there should be tons of information about it on the Internet.  Besides... with the fact that drinkable water is becoming harder to obtain and the costs are going up to provide that commodity, water science will be a real 'Biggie' in the near future.
557367
You don't give us which lab you are doing, so results would be hard to find..  For general information, do a good web search with the name of what you distilled.  I don't think you will find everything you want, but there is a large number of websites on the general subject.
16139
http://www.itt.edu/staff/boyter/links/index.html\n\nLook under chemistry equipment.  There are some chemicals you will not be able to get.  Posting what you are looking for would help.
379839
Your question makes no sense.\nIf I understand correctly you are making artificial sea water by making a solution of KCl, HNO3,Hg(+2), then you are adding Pb(+2) and Cd(+2) to known concentrations... measuring potential (what method?) and you want to determine the concentration of...what? You know the concentrations of all species (unless a reaction is taking place)
387481
Hmmmm...interesting...I didn't think you could really do that experiment WITHOUT making a mess! :)  (And isn't mess-making, next to bang-making, one of the main attractions of chemistry?)  I guess you could point the bottle away from you, at an angle, pop the Mentos into it with your fingers, then pull your hand away really quickly.
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Its fairly simple to make using a readily available liquid. I'll leave you to search the Internet then decide if you want to make it by yourself or get help from friends
133674
www.chemfinder.com might help
461010
Collecting gas over water is a coming chemistry method, because it assures that the gas produced is pure, with air.\nFill a large bassin with water, take a beaker, put it in the water, so that it is filled completely. Next lift the beaker upward and upside down. Don't take it out completely. The water will stay in the beaker.\n\nIf you know lead a tube from the experiment where the gas is produced under the beaker, the gas will replace the water. You are "collecting gas over water".
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um i don't know if this site has it, but you might want to try chemguide.co.uk :) it's a pretty good site.
130921
I think you should keep it simple yet smart. First get a piece of pure elemental Sodium and then let it drop on warm water. Afterwards explain how the chemical reaction released Sodium Oxide and Hydrogen Gas.
634990
First make a chemical equation, balance it, and find a mole ratio.  Use that ratio and the above information to solve the problem.
177755
You're right, spectroscopy is the proper method...Below you'll find a link to a quick and simple explanation.
383967
Q1 some mixture of a difficult-to-separate solid (eg. small bits of sand)  from a liquid
382869
thats not so hard... all you have to do is titrate it against an acidic solution of known concentration that has a mole ratio of 1:1with sls. add a indicator ( phenolphthaleine) to find the endpoint and that should do it.