Предмет: Химия, автор: Geniys

Вычислите кол-во теплоты, которая выделяется при сжигании 1м(кубич) природного газа, содержащего по обьему 95% метана,3% углекислого газа и 2% азота. Тепловой эффект реакции горения метан равен 880 кДж/моль

Ответы

Автор ответа: Летов
0

Суть особенно не меняется

СН4+2О2=СО2+2Н2О+880

кол-во метана: 0,95*1м3/22,4=0,0424 кмоль= 42,4 моль, тогда кол-во тепла равно:

42,4*880=37312 кДж.

Приятно было на такой дурняк получить 20 п. Шли еще

Похожие вопросы
Предмет: Английский язык, автор: Аноним
Срочно нужна помощь по английскому языку. 6 класс. Даю 100 баллов
I. Complete the sentences. Use Present Simple or Present Continuous.
1. Peter ________________ to school every day. (go)
2. I _____________________ (read) a very interesting book now.
3. What ________ you ______________ at the moment? (do)
4. Mary can’t answer the phone right now. She ___________________. (have a shower)
5. I always _________ before I _________ to bed. (read, go)
6. Brad usually ___________ football in the evening. (play)
7. _________ they ______________ now? (work)
8. Nick always _____________ at 8 o’clock. (get up)
9. He _______________ the carpet at the moment. (clean)
10. Where is Granny? – She ________________ in the garden. (work)


II. Complete the sentences, the following words can help you
(некоторые слова лишние):

baker, grocer, nurse, secretary, butcher, greengrocer, salesman, typist, electricity, modern conveniences, washing machine, vacuum cleaner, on, off
1. A ___________ works in a hospital and helps doctors.
2. A ___________ is a person who makes bread.
3. It is important to have all ¬¬¬¬¬¬¬________________ in your flat.
4. _____________ lights our houses.
5. My brother likes to clean the carpets with a ________________.
6. A ___________ sells fresh vegetables and fruit.
7. A ___________ is a person who types letters and other papers.
8. A ___________ is a person who sells meat.
9. In summer the central heating is not __________ in our houses.
10. The water is running. Turn it ________, please!
11. A ___________is a machine for washing clothes.