Mass of the Gas
The density of an unknown gas under STP conditions is 3.17 g.L-1. What is the molecular mass of the gas?
A. 3.17/24.5 = 0.13.
B. 3.17/22.4 = 0.14.
C. 3.17 x 24.5 = 77.7.
D. 3.17 x 22.4 = 71.0.
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