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Solution: If 250 mL of a gas at STP weighs 2 g, what is the molar mass...

Question

If 250 mL of a gas at STP weighs 2 g, what is the molar mass of the gas?

A. 179 g • mol-1

B. 8.00 g • mol-1

C. 56.0 g • mol-1

D. 28.0 g • mol-1

E. 44.8 g • mol-1