A:一定条件下,1 molN2与足量的氢气反应合成氨,转移的电子数为6 NA
B:常温下,1.0LpH=13的氢氧化钡溶液中OH﹣的数目为0.2NA
C:常温常压下,4.6 g的NO2和N2O4混合物中,含原子总数一定为0.3NA
D:1L0.1mol/L Na2CO3溶液中含CO32﹣数目为0.1NA
已知ab>0,bc>0,则直线ax+by=c通过( )
Tom was so careless that he his right arm when he was riding to school
yesterday.