Need some help
Hi,I am chelsea.I major in urban and rural planning.Now I find a job in a chemical trade platform(lookchem) .I do not know chemistry very well,but I want to make up for it.So if you are kind enough,please tell me how to learn chemistry and where to find the imformation about chemicals.Thank you very much.

If the molar mass is 203.2814 g/mol. How much is one mmol?

I have a few questions for the electrolysis of water.

If 4 Litres of water is used and lets say for example a 9 volt battery is used. How much hydrogen and oxygen will be produced per second in terms of molecules?

Also if salt is added to the water to speed up the process, how much salt would be needed and would the products from the electrolysis change?

Please answer
Thank you

Chemistry Calculator

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My dad has just been sent home from a 4 month stay in the hospital. He's now on home health care, but not by a paid nurse...by my mother. He's on an IV and a feeding tube. They gave us a very limited supply of sodium chloride seeing as how he needs it for the IV and to clean out the feeding tube...so I was wondering if anybody can tell me how to make 0.9% sodium chloride. We need it to hold us over until his next check up date at the hospital when they will give us some more. Any help whatsoever will be VERY much appreciated!! Thanks so much!

I think this is the best section to post this?-

Does anyone know a good source for hobby plating at a semi professional level? I’ve got a small set from cowbell plating but I would like something more than using house hold stuff to get by. I was looking at hobbyplating.com and they had some really nice stuff but it looks like their site is down and I didn’t notice anything ever updated since I first saw it a few years back. I’m mainly looking for anodizing resources.

I came across this web site while doing research on the use of Indium as a mineral supplement. I found an article that dismissed its nutrient value. There were also several comments that supported that thesis. I, however, am not too sure of the accuracy of these comments. While it is true that there has been little study of the possible health benefits form taking Indium, I believe that there may be many health benefits. And, I doubt that taking Indium in the recommend doses and manner is harmful.

Hey. My names marq (pronounced mark). Im a junior. I am in desperate need of help in chemistry. mostly stoichiometry and solutions. If you can give me a little guidance, please message me and we'll talk.

How do I find the mass of AlCl3 that is produced when 510 grams of Al2O3 react with HCl according to the following equation:

Al2O3+6HCl -> 2AlCl3+3H2O

Thanks for any help that you can give.