【简答题】Both classes of engines are of very similar construction. But as the higher pressure is called upon in cylinders, it has to be of more substantial construction, and is thus heavier. In general, the di...
【单选题】1mol/LH2SO4溶液中,c(H+)( )mol/L;0.1mol/LHAc溶液中,c(H+)( )0.1mol/L。
【单选题】公平理论是美国心理学家亚当斯根据以下理论提出的
【单选题】1mol/LH2SO4溶液中,c(H+)=____mol/L
【简答题】写出下列溶液的质子条件式: (1)0.1mol/LNH 4 Ac溶液:() (2)0.1mol/LH 2 SO 4 溶液:()
【单选题】今有0.1mol?L -1 Na 2 SO 4 溶液300mL,0.1mol?L -1 MgSO 4 溶液200mL和0.1mol?L -1 Al 2 (SO 4 ) 3 溶液100mL,这三种溶液中硫酸根离子浓度之比是( )
【判断题】公平理论是美国心理学家亚当斯在《奖酬不公平时对工作质量的影响》一书中提出的。()