5.4ml水, m(H2O)=5.4 ml*1 g/cm3=5.4g n (H2O)=5.4/18 =0.3 mol 因为1molH2O含3 mol原子,所以n(原子)= 0.3 * 3=0.9 mol6.72LCO2若在标准状况下,n(CO2)= 6.72/22.4=0.3 mol 但实际上是常温下,温度...