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NASTUA39
@NASTUA39
November 2021
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Какой объём (н.у.) водорода образуется при реакции 20 г кальция и воды.
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nikolaygr
Verified answer
Ca+2H2O=Ca(OH)2+H2
M(Ca)=40г/моль
n(Ca)+20/40=0,5моль
nCa:nH2=1:1
n(H2)=0,5моль
V(H2)=22,4*0,5=11,2л
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Answers & Comments
Verified answer
Ca+2H2O=Ca(OH)2+H2M(Ca)=40г/моль
n(Ca)+20/40=0,5моль
nCa:nH2=1:1
n(H2)=0,5моль
V(H2)=22,4*0,5=11,2л