April 2019 0 20 Report
Uzupełnij równania reakcji chemicznych

...Na + ...HNO3 ---> ... + H2^

... + H2SO4 ---> Na2SO4 + H2^

... + H2SO4 ---> ZnSO4 + H2^

... + ...HCl ---> FeCl2 + H2^

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