Предмет: Химия, автор: Нишемия

Сколько грамм хлорида натрия потребуется для приготовления 2 литров физиологического раствора (w(NaCl)=0,9%, плотность раствора равна 1,053 г/см^3)?​

Ответы

Автор ответа: shohopasd
0

Ответ:

Молярная концентрация измеряется в моль/л,. 0,1М означает, что в 1л раствора содержится 0,1моль соли.

0,1 моль хлорида натрия - в 1 л раствора

X моль - 0,12 л

Х=0,1*0,12/1= 0,012моль

mNaCl=0,012*58,5= 0,7г

Ответ-0,7г

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