fitted with a stopper carrying a dropping funnel and a  connection to a condenser set for distillation, are placed 750 g. of 6 N sulfuric acid (Note 1) and 250 g. of pinacol hydrate

他是750g中含有6mol的H2SO4么？还是指这750是6mol.L-1的
第一次见这么用。
这是1925年的orgsyn的文章
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修改:liuchao FROM 219.234.148.*
FROM 219.234.148.*