A 2.10-L vessel contains 4.65 g of a gas at 1.00 atm and 27.0 0C. What is the molar mass of the gas?
A、60.3g/mol
B、23.8g/mol
C、42.5g/mol
D、54.5g/mol
发布时间：2025-10-18 11:03:23
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答案：54.5g/mol
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