Предмет: Химия, автор: dora26kozir

В стакан налили 180г воды. Сколько молекул воды содержится в стакане? СКОЛЬКО МОЛЬ ВОДЫ ПОПАЛО В СТАКАН?
СРОЧНО ОТВЕТЬТЕ ПОЖАЛУЙСТА! Отдам все свои баллы ))
(обязательно ответить на 2 вопроса)

Ответы

Автор ответа: padpisikfiramira

Ответ: Если 1 молекула имеет массу 18 г/моль, тогда 180 грамм будут иметь 10 молекул воды

Объяснение:

dora26kozir: сколько моль воды попало в стакан?

Автор ответа: mazeingo2005

Ответ:

n = m/M, N = n*Na

M (H20) = 18 r/моль

n (H20) = 180г /18г/моль = 10 моль

N (H20) = 10 * 6 * 10 в 23 степени = 6 * 10 в 24 степени

dora26kozir: спасибо!!

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