1. Wpisz odpowiednie cyfry żeby wszystko było git
a) ......Cr+.......O2 ---> .........CrO3
b) .......Fe+........O2-------> ........Fe2O3
c).......N2+........O2----->NO
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a) 2Cr+3O2 ---> 2CrO3
b) 4Fe + 3O2 ----> 2Fe2O3
c) N2 + O2 ----> 2NO
2Cr+3O2--->2CrO3
4Fe+3O2--->2Fe2O3
N2+O2--->2NO