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【单选题】
下列说法中不正确的是 [ ]A.
磷酸的摩尔质量与6.02×10 23 个磷酸分子的质量在数值上相等
B.
6.02×10 23 个氮分子和6.02×10 23 个氢分子的质量比等于14∶1
C.
32g氧气所含的原子数目为2×6.02×10 23
D.
0.5×6.02×10 23 个一氧化碳分子所占体积是11.2 L
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