A:标准状况下,22.4 L空气中O2、N2分子总数目为NA
B:0.1 mol羟基中所含电子数目为NA
C:28 g乙烯、丙烯混合气体中所含原子数为6NA
D:5.6 g铁与硝酸完全反应时转移的电子数目为0.3NA
用下列气体物质的序号填空.
①氮气 ②二氧化碳 ③氧气 ④甲烷
Many of the things we now benefit from would not be around _______ Thomas Edison.