Tuesday
May 26, 2015

Homework Help: Chemistry

Posted by Elizabeth on Friday, October 26, 2012 at 7:55pm.

I don't know exactly how to start this question:

A sample gas contains 2.95 x 10e24 molecules. The sample is 21.0% oxygen. Calculate volume of oxygen in liters assuming oxygen has a density of 1.308 g/L.

Please help me how to do this. I have been stuck and still trying to figure this one out.

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