Asked by Anonymous

a sample bulb contained 0.712g of H2(g) at a certain temperature and pressure. At the same temperature and pressure, the bulb can hold 13.0g of an unknown gas. What is the molar mass of the unknown gas?

Answers

Answered by drwls
0.712 g of H2 is 0.353 moles

The bulb will hold 0.353 moles of any gas at the same p and T.

If 13.0 g = 0.353 moles, one mole has a mass of 36.8 g, and so that is the molar mass of the unknown gas

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