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privalovkater
@privalovkater
September 2021
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DJToxa
Verified answer
1.Дано:
m(Mg)=4.8г
Найти:
m(O2)-?
Решение:
2Mg+O2=2MgO
M(Mg)= 24г/моль
n(Mg)=m/M=4.8/24=0.2моль
n(O2)=0.2/2 : x/1 = 0.1моль
M(O2)=32г/моль
m(O2)=n*M=0.1*32=3.2г
Ответ:3.2 г
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Answers & Comments
Verified answer
1.Дано:m(Mg)=4.8г
Найти:
m(O2)-?
Решение:
2Mg+O2=2MgO
M(Mg)= 24г/моль
n(Mg)=m/M=4.8/24=0.2моль
n(O2)=0.2/2 : x/1 = 0.1моль
M(O2)=32г/моль
m(O2)=n*M=0.1*32=3.2г
Ответ:3.2 г