in stoichiometry, after you have balanced the formula, how do you know which substance is the one you use to convert all 4 times to get the wanted reults

Answer 1

You have to work these in mole><mole. Conversion depends if you want mass or volume of gas.

http://www.khanacademy.org/video/stoichiometry?playlist=Chemistry

Answer 2

hey tanks

Answer 3

thanks i meant