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July 6, 2015

Homework Help: Chemistry (My previous post lacked something)

Posted by Stefan on Tuesday, January 14, 2014 at 11:10pm.

Question: At STP propane (C3H8) burns in oxygen to form 2.15L of carbon dioxide and water.
The question is in 4 parts. I just need the first:

a)What mass of oxygen is necessary for this reaction?

So far I've got 2.15 L x 1 mole /22.4 L
But when I try to do the mole ratio, I don't know what to do since the 2.15 L is of carbon dioxide and water.

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