n(NaNO3)=170:85=2моль
n(NaNO2)=138:69=2моль
2. 2 1
2NaNO3-->2NaNO2+O2
m(O2)=1×32=32г
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n(NaNO3)=170:85=2моль
n(NaNO2)=138:69=2моль
2. 2 1
2NaNO3-->2NaNO2+O2
m(O2)=1×32=32г