这个是对的
计算如下0.5*2*NA=NA=6.02*10^23
因为He有2个电子,所以是对的
0.5molHe约含有6.02×10的23次方个电子,对吗,为什么
0.5molHe约含有6.02×10的23次方个电子,对吗,为什么
数学人气:676 ℃时间:2019-10-11 16:26:19
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