Jawabanmu

2014-02-25T21:08:12+07:00
A. H2 -> biloks unsur H = 0
B. H5P3O10 -> +5  +15  -20
 BILOKS UNSUR H = +1 , P = +5 , O = -2
C. (C2O4)2 -> C4H8 -> +16  -16
BILOKS UNSUR C = +4, O = -2