Мr(H2S) = Ar(H2)•2+Ar(S) = 1 •2 + 32 = 34
Mr(KHCO3) = Ar(K) + Ar(H2) + Ar(C) + Ar(O2)•3 = 39+1+12+48 = 100
Мr(H2S) = Ar(H2)•2+Ar(S) = 1 •2 + 32 = 34
Mr(KHCO3) = Ar(K) + Ar(H2) + Ar(C) + Ar(O2)•3 = 39+1+12+48 = 100