Предмет: Химия, автор: Empty200

Человек в сутки с воздухом вдыхает примерно 750 л кислорода. Масса этого объёма кислорода составляет в г (ответ округлите до целого числа)

Ответы

Автор ответа: Buwero

Ответ:

1071 грамм.

Объяснение:

Надо объём поделить на 22.4 литра на моль.

750/22.4=33.48 моля (примерно)

Надо умножить на молярную массу кислорода (32=16*2)

32*33.48=1071 грамм (примерно)

Buwero: Странно, но в моём электронном тесте по химии, ответило, что это не верно. Наверное сбой какой-то, а может быть и я ошибся, хотя вроде нет. Всё должно быть правильно...

Buwero: Прошлый я удалил, там не дорешал до конца

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