Предмет: Химия, автор: nastapoluhovic640

СРОООЧЧНОООО ПОЖАЛУЙСТА!!!!! визначте кількість речовини моль натрій сульфату масою 28,4 г​

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Ответы

Автор ответа: PegeJ
1

n=m:M;

M(Na2SO4)=142

n=28,4:142=0,2моль

0,2моль

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