Jawabanmu

2014-02-03T22:09:33+07:00
Tentukan biloks dari :

1. Fe₂(O₃)₃
Fe = +3
O = -2

2. Al₂(SO₄)₃
Al = +3
S = +6
O = -2

3. K₂Cr₂O₇
K = +1
Cr = +6
O = -2

4. H₃PO₃
H = +1
P = +3
O = -2