下列说法中正确的是                               

下列说法中正确的是                                         

AH2SO4 的摩尔质量是 98 g            B1 mol H2O 的质量是 18 g/mol

CCl-的摩尔质量是 35.5 g/mol           D1 mol N2 的体积是 22.4 L

答案

C

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