Предмет: Химия, автор: timoshaL

Что обозначают записи: 3H, 2H(2)O, 5O(2)
( )-индексы

Ответы

Автор ответа: tkachvita

0

3H - 3 молекулы водорода
2H2O - 2 молекулы воды
5O2 - 5 молекул кислорода

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