(1)112/22.4=5mol摩尔数=标况气体体积/标况气体摩尔体积（2）1000g+5*36.5g/mol=1182.5g总质量=水的质量+气体质量（3）v=1182.5/1.08=1905ml(4)c=n/v=5/1.905= 2.62mol/l(5)质量分数=(36.5*5/1182.5)*100%=15.01%
