Jawabanmu

2014-05-09T10:41:27+07:00
2014-05-09T17:33:05+07:00
2H2+O2------->2H2O

mol H2=4/2=2
mol O2= 40/32=1,25

mol H2O =2/2 X 1,25
                 =1,25
massa H2O=1,25 x 18