Предмет: Химия, автор: artyomdan2006

Вычисли массовую долю (%) поваренной соли в растворе, если известно, что в 240 г раствора содержится 20 г растворённого вещества.

Определи массовую долю с точностью до десятых. Например: 21,8.

Ответы

Автор ответа: lora7667tyj

Ответ:

8,3- массовая доля поваренной соли

Объяснение:

20:240•100%= 8,3

hardkor256: абослютно верно молодец

Автор ответа: qwerty3159

Ответ:

100%×20:240=0.8 или 240:20×100%=12

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