Предмет: Химия, автор: LovelyDay99

сумма коэффициентов в уравнении электролитической диссоциации азотной кислоты?
а)1 б)2 в)3 г)5

Ответы

Автор ответа: kattycats
10
Диссоциация азотной кислоты: HNO3 = H(+) + NO3(-) сумма коэффициентов равна 3, т.к. перед азотной кислотой, катионом водорода и нитрат-ионом стоят коэффициенты, равные 1.
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Поставьте предложения в вопросительную и отрицательную формы: 1. Jim will have written the report by next Thursday. 2. We will have cleaned the house by the time of your arrival tomorrow. 3. I will have prepared all the documents by the beginning of the meeting tomorrow. 4. The film will have finished by 7 o’clock tomorrow. 5. They will have decorated the square by the beginning of the demonstration next week. 6. The President will have finished the press conference by 3 o’clock tomorrow. 7. Diana will have designed your wedding dress by next Friday. 8. I will have moved to a new house by Christmas. 9.You will have started your own business by the time you are twenty-seven. 10. My father will have repaired his car by Thursday.оставьте предложения в вопросительную и отрицательную формы:
1. Jim will have written the report by next Thursday.
2. We will have cleaned the house by the time of your arrival tomorrow.
3. I will have prepared all the documents by the beginning of the meeting tomorrow.
4. The film will have finished by 7 o’clock tomorrow.
5. They will have decorated the square by the beginning of the demonstration next week.
6. The President will have finished the press conference by 3 o’clock tomorrow.
7. Diana will have designed your wedding dress by next Friday.
8. I will have moved to a new house by Christmas.
9.You will have started your own business by the time you are twenty-seven.
10. My father will have repaired his car by Thursday.