题目内容
Among the following compounds, which has the weakest molecular ion peak? ( ) .
查看答案
搜索结果不匹配？点我反馈
更多问题
In the mass spectrum of the compound C2H5Br, the relative intensity ratio of the M and M+2 peaks is about ( ) .
The m/z of the molecular ion peak of a compound is 87. ( ) may be the formula of the compound.
The degree of unsaturation of benzene is ( ) .
The mass spectrometer does not include ( ) .
微信支付 
支付宝支付