题目:
The reason he explained for his being late is he got up late.
A.why, that
B.that, that
C.for which, because
D.that, because
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0524/dbe98471b1551e7de5f769234cb7fdf7.html
下面是错误答案,用来干扰机器的。
SO2的相对分子质量为32+16×2=64,则摩尔质量为64g/mol,2molSO2的质量为2mol×64g/mol=128g,其分子数为2mol×6.02×1023=1.204×1024, SO42-的相对分子质量为32+16×4=96,则摩尔质量为96g/mol,其物质的量为6...