n(O2)=5,6/22,4=0,25моль
M(O2)=32г/моль
m(O2)=0,25*32=8г
N(O2)=0,25*6,02*10²³=1,505*10²³молекул
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n(O2)=5,6/22,4=0,25моль
M(O2)=32г/моль
m(O2)=0,25*32=8г
N(O2)=0,25*6,02*10²³=1,505*10²³молекул