已知1.505×1023个X气体分子的质量为8g,则X气体的摩尔质量是 A. 16g 

已知1.505×1023X气体分子的质量为8g,则X气体的摩尔质量是 

A. 16g         B. 32g         C. 64g /mol    D. 32g /mol

答案

D

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