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Вычеслите количество теплоты которая выделяется при горении углерода массой 20кг (C+O2=CO+402кДж)
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Предмет:
Химия -
Автор:
bumpkinow4h - 5 лет назад
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Ответы 1
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20 кг х кДжС + О2 = СО + 402 кДж0,012 кг20/0,012=х:402х=Q' = 670000 кДж = 6,7*10⁵ кДжОтвет: 6,7*10⁵ кДж
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Автор:
manatee - 5 лет назад
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Переведите текст с английского на русский язык.
AT A HOTEL
As soon as you are through with the customs you’ll probably take a taxi to a hotel. It’s best to book a room (A.E. — make a reservation) in advance. In this case you’ll be sure to stay at a hotel without any problems. You can book a room by telephone or telegram.
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