用NA表示阿伏加德罗常数，下列叙述正确的是
| A．46g四氧化二氮含有的原子总数为3NA |
| B．20gD2O中含有D—O键的数目为NA |
| C．100mL、1mol/L的乙酸溶液中含有H+数为0.1NA |
| D．2molFeC13制成胶体，所得胶体的胶粒数为2NA |
相关试题
She brought with her three friends, none of ______ I had ever met before. 
| A．them | B．who | C．whom | D．these |
I tried phoning her office, but I couldn’t _______. 
| A．get along | B．get on | C．get to | D．get through |
His sister left home in 1998, and _______since. 
| A．had not been heard of | B．has not been heard of |
C．had not heard of | D．has not heard of |
What do you mean, there are only ten tickets? There _____ be twelve
| A．should | B．would |
C．will | D．shall |
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