Ответ:
1) H2S
w(H)=Mr(2H)/Mr(H2S)*100=2/34*100=5.9%
w(S)=Mr(S)/Mr(H2S)*100=32/34*100=94.1%
2)P2O5
w(P)=Mr(2P)/Mr(P2O5)*100=62/142*100=43.7%
w(O)=Mr(5O)/Mr(P2O5)*100=80/142*100=56.3%
3)H2CO3
w(H)=Mr(2H)/Mr(H2CO3)*100=2/62*100=3.2%
w(C)=Mr(C)/Mr(H2CO3)*100=12/62*100=19.4%
w(O)=Mr(3O)/Mr(H2CO3)*100=48/62*100=77.4%
4)MgO
w(Mg)=Mr(Mg)/Mr(MgO)*100=24/40*100=60%
w(O)=Mr(O)/Mr(MgO)*100=16/40*100=40%
Объяснение:
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Answers & Comments
Ответ:
1) H2S
w(H)=Mr(2H)/Mr(H2S)*100=2/34*100=5.9%
w(S)=Mr(S)/Mr(H2S)*100=32/34*100=94.1%
2)P2O5
w(P)=Mr(2P)/Mr(P2O5)*100=62/142*100=43.7%
w(O)=Mr(5O)/Mr(P2O5)*100=80/142*100=56.3%
3)H2CO3
w(H)=Mr(2H)/Mr(H2CO3)*100=2/62*100=3.2%
w(C)=Mr(C)/Mr(H2CO3)*100=12/62*100=19.4%
w(O)=Mr(3O)/Mr(H2CO3)*100=48/62*100=77.4%
4)MgO
w(Mg)=Mr(Mg)/Mr(MgO)*100=24/40*100=60%
w(O)=Mr(O)/Mr(MgO)*100=16/40*100=40%
Объяснение: