Предмет: Химия, автор: coolsanyanomer1

У розчин масою 100 г з масовою часткою солі 3% додали ще 200 г води.Масова частка солі в новому розчині:
А 1,5%
Б 1%
В 2%
Г 2,5%
Можна будь-ласка пояснення

Ответы

Автор ответа: dihtyarenkoegor

23

Ответ:

Дано:

м(розч)=100г

w(солі)=3%

m(H2O)=200г

w(солі)-?

Объяснение:

м(солі)=100*0,03=3г

м(розч)=3:300*100%=1%

Відповідь:1% (б)

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