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Консультация № 195489
03.05.2019, 19:29
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Здравствуйте, уважаемые эксперты! Прошу вас помочь решить задачу
Некоторое количество кислорода занимает объем V = 15 л при давлении Р1 = 9 атм. Какую работу совершает газ при изотермическом расширении, если давление при этом уменьшилось до Р2 = 2 атм.?
Некоторое количество кислорода занимает объем V = 15 л при давлении Р1 = 9 атм. Какую работу совершает газ при изотермическом расширении, если давление при этом уменьшилось до Р2 = 2 атм.?
Обсуждение
08.05.2019, 07:41
общий
это ответ
Здравствуйте, ya.anya-semenova!
Имеем
л
м3 -- начальный объём кислорода;
атм
(Па) -- начальное давление кислорода;
атм
(Па) -- конечное давление кислорода.
Количество кислорода в условии задачи не указано, а для получения численного ответа на вопрос его нужно знать. Из уравнения Клапейрона -- Менделеева получим
Тогда, согласно формуле [1, с. 163], искомая работа составляет
(Дж)
кДж.
Литература
1. Яворский Б. М., Детлаф А. А. Справочник по физике для инженеров и студентов вузов. -- М.: Наука, 1968. -- 940 с.
Имеем
л м3 -- начальный объём кислорода; атм (Па) -- начальное давление кислорода; атм (Па) -- конечное давление кислорода.Количество кислорода в условии задачи не указано, а для получения численного ответа на вопрос его нужно знать. Из уравнения Клапейрона -- Менделеева получим
Тогда, согласно формуле [1, с. 163], искомая работа составляет
(Дж) кДж.Литература
1. Яворский Б. М., Детлаф А. А. Справочник по физике для инженеров и студентов вузов. -- М.: Наука, 1968. -- 940 с.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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