Предмет: Химия, автор: shvanova99

Срочно!!!
До розчину масою 50г з масовою часткою речовини 0,2 додали 10г речовини. Знайдіть масову частку речовини у новому розчині, відповідь надайте у відсотках з десятими долями.

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Автор ответа: mrskokip1

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