Homework Help: Chem

Posted by Chris on Monday, February 5, 2007 at 5:13pm.

What is the density of N2O, a gas, at STP?

How many moles are in 16 grams of O2?

density = mass/volume
1 mol of a gas occupies 22.4 L at STP.
density = molar mass/molar volume = ??

#2. 1 mol O2 has a mass of 32 grams?
grams = mols/molar mass = ??

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