Ответ:
1. Mr (KOH)= Ar (K)+Ar(O)+Ar(H)=39+16+1=56
2. Mr (H3PO4)= Ar(H)×3+Ar(P)+Ar(O)×4= 1×3+31+16×4=3+31+64=98
3. Mr (H2O2)= Ar(H)×2+Ar(O)×2=1×2+16×2=2+32=34
4. Mr (CH4) = Ar(C)+Ar(H)×4= 12+1×4=12+4=16
5. Mr (Ba(OH)2= Ar(Ba)+Ar(OH)×2=137+(16+1)2= 137+34=171
Объяснение:
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Answers & Comments
Ответ:
1. Mr (KOH)= Ar (K)+Ar(O)+Ar(H)=39+16+1=56
2. Mr (H3PO4)= Ar(H)×3+Ar(P)+Ar(O)×4= 1×3+31+16×4=3+31+64=98
3. Mr (H2O2)= Ar(H)×2+Ar(O)×2=1×2+16×2=2+32=34
4. Mr (CH4) = Ar(C)+Ar(H)×4= 12+1×4=12+4=16
5. Mr (Ba(OH)2= Ar(Ba)+Ar(OH)×2=137+(16+1)2= 137+34=171
Объяснение:
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