Homework Help: chemistry

Posted by Anonymous on Monday, December 5, 2011 at 2:41pm.

What is the molecular weight of an unknown gas if 2.5g of it occupies 2L at 630 torr and a temp. of 600K?
10.2
36.6
74.3
28.9
40.1

chemistry - DrBob222, Monday, December 5, 2011 at 2:51pm
PV = nRT and solve for n = number of moles. Then n = grams/molar mass

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