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August 1, 2015

Homework Help: Chemistry

Posted by Anna on Monday, November 29, 2010 at 7:26pm.

8.40 grams of Hydrogen gas reacts with 48.2 grams of Oxygen gas.
Give the mass of the water vapor produced and the mass of the excess reactant left over.

Can somebody please explain stoichiometry to me? I've failed the test and the retest. I'm usually able to balance the equation, but after that I get stuck. I just don't get it. :(

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