题目

下列各组物质中含氧原子的物质的量相同的是                                ( ) A．0.3 mol O2和0.3 mol H2O B．0.1 mol H2SO4和3.6 g H2O C．0.1 mol MgSO4·7H2O和0.1 mol C12H22O11(蔗糖) D．6.02×1023个CO2与0.1 mol KMnO4 答案：B9. Han Han is a very popular (write) in China.