1)2KClO3=2KCl+3O2
2+2+3=7 В
2)3V2O5+10Al=5Al2O3+6V
3+10+5+6=24 Е
3)C4H8+6O2=4CO2+4H2O
1+6+4+4=15 Д
4)2Na2SO3+O2=2Na2SO4
2+1+2=5 Б
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1)2KClO3=2KCl+3O2
2+2+3=7 В
2)3V2O5+10Al=5Al2O3+6V
3+10+5+6=24 Е
3)C4H8+6O2=4CO2+4H2O
1+6+4+4=15 Д
4)2Na2SO3+O2=2Na2SO4
2+1+2=5 Б