Предмет: Химия, автор: Cашулька555

Система
находится в состоянии равновесия: N2O4(г)
2 NO2(г)
Какое утверждение правильно описывает систему? 
1) Скорости прямой и обратной реакции равны. 2) Скорости прямой и обратной реакции увеличиваются. 3) Концентрации N2O4 и NO2 равны. 4) Концентрации  N2O4 и NO2 увеличиваются.

Ответы

Автор ответа: химозина
0
первое утверждение верное
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Текст Peter was ten years old and he went to the City School. He was very good at football, so he was in his school team. He always played very well and bravely in practice games and in matches, and he scored plenty of goals. Peter's grandfather and grandmother usually came to see him when there was a match, and they were always happy when other people said, "Your grandson piays very well, doesn't he?" Then one day Peter said to his grandmother, "We're practis- ing for our big match next Saturday. Our school's going to play against the Garden School. They have the best team in our city, so perhaps they'll beat us. Can you come and see the match?" "Oh, yes," his grandmother answered, "your grandfather and I will be there-and I'm certain that you'll beat the Garden School." "Well, I hope we will," Peter answered. The match was in the park, and it began at half past two on Saturday. The Garden School team wore orange shirts, light blue shorts and orange socks, and Peter's team wore dark blue and white shirts, white shorts and dark blue socks. In the first two minutes of the match, the Garden School boys came very close to the City School's goal, but then the goal- keeper kicked the ball to Peter in the middle of the field, and Peter ran with it and kicked it straight into the goal. All the City School boys as well as their families were very happy to see it. After he had scored once, Peter scored twice again before half time. Then in the second half of the match he nearly scored another goal, but he hardly touched the ball with his foot, and the goalkeeper caught it easily and threw it out again. After the match, Peter's grandfather said to him, "You missed a good chance to score a fourth goal then, Peter. If you'd kicked the ball hard, you'd have got a goal easily. Why did you kick it weakly?" "Because there were tears in the goalkeeper's eyes," Peter answered.
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