2004/10/03 | 摩尔[Mole]
类别(℃〖化学〗) | 评论(0) | 阅读(29) | 发表于 10:25
An Avogadro's number (i.e., quantity ) of a substance. A mole of chemical substance is therefore, by definition, the number in grams corresponding to the atomic or molecular mass (in atomic mass units). For example, since carbon-12 has atomic mass of 12, a mole of carbon is 12 grams.
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