Вопрос школьника по предмету Химия
H2SO4+K2O
CuSO4+KOH
SO2+NaOH
Na2O+N2O5
H2SiO3+KOH
AgNO3+Cu
Помогите пожалуйста
Ответ учителя по предмету Химия
1)H2SO4+K2O=K2SO4+H2O
2)CuSO4+2KOH=K2SO4+Cu(OH)2
3)SO2+2NaOH=Na2SO3+H2O
5)H2SiO3+2KOH=K2SiO3+2H2O
6)2AgNO3+KOH=Cu(NO3)2+2Ag
Похожие вопросы от пользователей
Выберите правильный перевод следующего русского предложения:
1. Наши станки экспортируются во многие страны.
А. Our machines are exported to many countries.
Б. We have been exported our machines to many contries.
В. Our machines have been exported to many countries.
2. Вам дали скидку?
А. You were given a discount, weren’t you?
Б. Are you given a discount?
В. Were you given a discount?
3. Мы еще не модифицируем модель к концу года.
А. The model We will not be modified by the end of the year yet.
Б. We will not modify the model by the end of the year yet.
В. We will not have modified the model by the end of the year yet.
Г. The model will not have been modified yet by the end of the year.
4. Новое оборудование не устанавливалось в цехе, когда приехали инспектора.
А. The new equipment was not being installed in the shop when the inspectors arrived at the plant.
Б. The new equipment were being installed in the shop when the inspectors arrived at the plant.
В. The new equipment had not installed in the shop when the inspectors arrived at the plant.
5. Меня только что пригласили принять участие в совещании.
А. I was just invited to take part in the meeting.
Б. I have just been invited to take part in the meeting.
В. I am invited to take part in the meeting.
6. Вопрос цены был урегулирован, когда финансовый директор позвонил вам? — Нет, не был.
А. Has the price been settled when the Managing Director called you? − No, it hasn’t.
Б. Was the price settled when the Managing Director called you? − No, it wasn’t.
В. Had the price been settled when the Managing Director called you? − No, it hadn’t.
7. Кому был выслан отчет?
А. Who has the report been sent to?
Б. Who was the report been sent to?
В. Who was the report send to?
8. Когда будет экспортироваться ваша новая модель?
А. When will your new model have been exported?
Б. When will your new model be exported?
В. When will you export your new model ?
9. Текущий ремонт будет закончен только к 11 утра.
А. Wу will have finished the maintenanceonly by 11 a.m.
Б. The maintenance will be finished only by 11 a.m.
В. The maintenance will have been finished only by 11 a.m.
Г. The maintenance will been finished only by 11 a.m.
10. К сожалению, нам не предложили эту работу.
А. Unfortunately, we did not offer that job.
Б. Unfortunately, we were not offered that job.