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теплота образования 1 моль оксида алюминия равна 1675 кДж.Какое количество алюминия сгорело, если количество выделившейся теплоты равно 3350 кДж
Ответы 3
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в ответе 4 моль, надо найти сколько сгорело моль Al, a не Al2O3
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Автор:
priscillamullins - 6 лет назад
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а просмотрел
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Автор:
natalie - 6 лет назад
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4Al+3O2=2Al2O3на 2моль Al приходится 1 моль Al2o31----1675 x--- 6700x=4
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Автор:
havendillon - 6 лет назад
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Какие 10 вопросов (на английском) можно сделать про этот текст?
11 July Camp Pineland
It's been a week since the night when Dima was attacked by the bear. I will always remember that night now when I stayed with Dima and we talked until the morning. I had never felt so close to my brother before. I was surprised to find out how much he had grown up and changed during the summer. Dima told me everything he had heard in the forest. He said that David and Daniel both liked me and that I had been the reason for their fight. It turned out that Dima had always known that David had written that letter to me and he had even helped him with some of the Russian words. However, because I hadn't mentioned it, my brother had kept his mouth shut too. But he should have told me. Everything would have been different then. Anyway, it was too late now. I told Dima it didn't matter to me and he dropped the subject.
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Предмет:
Английский язык -
Автор:
brendon94 - 6 лет назад
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Предмет:
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Автор:
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Предмет:
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