Предмет: Химия, автор: littleboss2008mega

До 200г розчину цукру з массовою часткою 0,8 долили 50г води. Знайти массовв частку цукру у новому розчині


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Ответы

Автор ответа: popovamasha1975
1

Дано:

m(розч)-200г

w-0,8

m(H2O)50г

---------------------------

Знайти:

w(цукру)-?

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Розв'язок:

1)200×0,8=160г

2)200+50=250г

3)160/250×100%=64%

Відповідь:64%

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