October 2021 0 11 Report
Расставь коэффициенты и посчитай сумму всех коэффициентов в уравнениях: 1)Al + H2SO4 = Al2(SO4)3 + H2

Сумма коэффициентов: 

2) H2O2 = H2O + O2

Сумма коэффициентов: ​
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