Предмет: Химия, автор: voydd

Помогите пожалуйста найти Mr

Al2(SO4)3​

Ответы

Автор ответа: masha0626
1

Відповідь:

Mr(Al2(SO4)3)=Ar(Al)*2+Ar(S)*3+Ar(O)*4*3=27*2+32*3+16*4*3=342

voydd: А чому ми множим 32 на 3, а не 32 на 4?
masha0626: тому що 4, це кількість тільки оксигену, а якщо в нас (SO4)3, то кожен елемент треба додатково помножити на 3
masha0626: Сульфуру тільки 1 елемент в дужках
voydd: ДЯКУЮ!!
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