Предмет: Химия, автор: fdkubani

Вычислить молярную массу
1)NH3 , HNO3
2)CO2 , P2O5
3)H2SO4 , CO
Химия срочно!!!!!!!

Ответы

Автор ответа: AlexPyterskiy
3
1) Mr(NH3)=Ar(N)+Ar(H)×3=14+1×3=17
M(NH3)=Mr(NH3)=17 г/моль

Mr (HNO3)=Ar(H) + Ar(N) + Ar(O)×3=1+14+16×3=15+48=63
M(HNO3)=Mr(HNO3)=63 г/моль

2) Mr(CO2)=Ar(C) +Ar(O)×2=12 + 32=44
M(CO2)=Mr(CO2)=44 г/моль


Mr(P2O5)=Ar(P)×2+Ar(O)×5=31×2+16×5=62+80=142
M(P2O5)=Mr(P2O5)=142г/моль

3)Mr(H2SO4)=Ar(H2)2+Ar(S)32+Ar(O4)64=98
M(H2SO4)=Mr(H2SO4)=98г/моль

Mr(CO2)=Ar(C)+Ar(O)2=12+32=44
M(CO2)=Mr(CO2)=44 г/моль
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