Ответ учителя по предмету Химия
1. Zn + S = ZnS (Сульфид цинка)
2. 2ZnS + 3O2 = 2ZnO + 2SO2 реакция пойдёт только при горении
3. SO2 + Na2O = Na2SO3 (сульфиД натрия, у тебя ошибка в названии)
4. Na2SO3 + HCl = NaCl + SO2 + H2O
Не понятно, спрашивай =)
Похожие вопросы от пользователей
1/х + 1/у = 7/ху
1/у — 1/х = 3/ху
Даю 20 балл
I. He (to get) up at seven o’clock yesterday. 2. Father (to come) home at six o’clock yesterday. 3. I (to read) a book at six o’clock yesterday. 4. She (to fall) asleep at eleven o’clock yesterday. 5. Mother (to drink) tea at eleven o’clock yesterday. 6. Father (to watch) TV at ten o’clock yesterday. 7. I (to go) to bed at nine o’clock yesterday. 8. I (to finish) my homework at nine o’clock yesterday. 9. I (to play) the piano at five o’clock yesterday. 10. He (to begin) to do his homework at four o’clock yesterday. 11. She (to wash) the floor at four o’clock yesterday. 12. I (to meet) Nick at three o’clock yesterday. 13. When I (to come) home, Kate (to play) the piano. 14. When I (to meet) John, he (to go) to the railway station. 15. When I (to go) to the museum, I (to see) a big crowd of people in the street. 18. They (to play) in the yard in the evening yesterday. 17. They (to play) in the yard the whole evening yesterday. 18. I (to clean) my teeth at eight o’clock in the morning yesterday. 19. We (to go) to the wood in summer. 20. When the teacher (to open) the door of the classroom, the pupils (to sit) at their desks.
Заранее спасибо :)