Объяснение:
Mr(H2CO3)=1*2+12+16*3=62
W(H)=Ar(H)*n/Mr(H2CO3). *100%=1*2/62. *100%=3%
W(C)=Ar(C)*n/Mr(H2CO3) *100%=12*1/62. *100%=19%
W(O)=Ar(O)*n/Mr(H2CO3). *100%=16*3/62. *100%=78%
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Объяснение:
Mr(H2CO3)=1*2+12+16*3=62
W(H)=Ar(H)*n/Mr(H2CO3). *100%=1*2/62. *100%=3%
W(C)=Ar(C)*n/Mr(H2CO3) *100%=12*1/62. *100%=19%
W(O)=Ar(O)*n/Mr(H2CO3). *100%=16*3/62. *100%=78%