Предмет: Химия, автор: АльфредStR

решите примеры по химии, Mr(Al2(SO4)3) =
2*Ar+3*Ar(S)+12*Ar(O) =
Mr(Fe(CO3)3)=
Mr(Cu(OH)2)=
все, * это умножение

Ответы

Автор ответа: тайная
0
Mr(Al2(SO4)3) = 27 ∙ 2 + 3∙32 + 12 ∙16 = 342
Mr(Fe(CO3)3)= 56 + 3∙12 + 9∙16 = 236
Mr(Cu(OH)2)= 64 + 2∙16 + 1∙2 = 98
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