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Pink64
2 năm trước
cho Zn vào HCl 14,6% phản ứng kết thúc thu được 0,8 lit khí (đktc ) a) tính khối lượn Zn phản ứng b) tính khối lượn đung dịch HCl c) tính C% của ZnCl2 tạo thành sau phản ứng
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Các câu hỏi liên quan

1) viết lại câu sao cho nghĩa ko thay đổi Câu 1:they played volleyball in the area yesterday Volleyball............................ Câu 2: They didn't help their mother last year Their mother................... Câu 3:I met Mary at John's party last night Mary................................ Câu 4:I wash the car every week The car.................... Câu 5:She has written many books recently Many books................ Câu 6:He likes wine I wish................... Câu 7:They didn't organize the party yesterday The party........................ câu 8:because it rained heavily.He didn't go to scholl It................................so...................... Câu 9:he spent two hours driving to Nha Trang next week it took him........................... Câu 10:They have built two bridges in the area Two bridges.......................... CÂU 11: We could about the contract The contract........................... cÂU 12: He is going to buy a lots of books tomorrow A lot of books,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Câu 13:We spent much money last week Much money......................... Câu 14:we often help her with her homework She................... Câu 15:They sell many kinds of jeans in the town Many kinds of jeans................................ Câu 16:Penicillin can cure many dangerous diseases Many dangerous.................................. bÀI 2: cjhuyển sang câu bị động Câu 1:peter took me a beautiful teacher Câu 2:will you invite her to your birthday party? Câu 3;The often play tennis in the afternoon Câu4:Many people in the world speak English Câu 5/:Does your country export rice to Briton

Giúp mik vs ah! 7. The children ___________ in the part at the moment. A. playing. B. is playing. C. are playing. D. plays. 8. My mother __________ a meal now. A. cooking. B. is cooking. C. cooks. D. cook. 9. It’s the sixth time I ___________ this novel. A. have been reading. B. am reading. C. have read. D. read. 10. Thomas ____________ Spanish since 2005. A. learnt. B. is learning. C. have learnt. D. has learnt. 11. Our city ____________ a lot so far. A. changes. B. has changed. C. changing. D. changed. 12. They __________ a new bridge from MT to BT recently. A. build. B. are building. C. have built. D. built. 13. Our teacher ___________ us a test every month. A. gives. B. is giving. C. giving. D. gives. 14. I ___________ coffee for breakfast every day. A. have. B. has. C. having. D. am having. 15. My brother _____________ in a shoe store now. A. work. B. working. C. is working. D. are working. 16. She __________ to school every day. A. go. B. goes. C. to go. D. going. 17. We ______________ this exercise at the moment. A. are do. B. am do. C. are doing. D. do. 18. Miss Helen ____________ a newspaper now. A. are reading. B. am reading. C. is reading. D. reading. 19. Mary _____________ ice-cream. A. love. B. loves. C. loving. D. is loving. 20. It _____________ much in the summer. It ____________ (rain) now. A. rain/ is raining. B. rain/ raining. C. rains/ is raining. D. rains/rains. 21. She _______________ trees in the garden now. A. plant. B. planting. C. to plant. D. is planting. 22. Students ______________ hard every day. A. working. B. to work. C. works. D. work. 23. ________________ to the radio now ? A. Are you listening. B. Is you listening. C. Do you listening. D. Be you listening. 24. I _____________ at seven o’clock every morning. A. am not get up. B. do not get up. C. does not get up. D. are not get up. 25. We always ___________ our exercises carefully. A. do. B. are doing. C. does. D. doing. 26. I ____________ to school every day. A. go. B. goes. C. going. D. am going. 27. My parents __________ in the garden now. A. sitting. B. are sitting. C. is sit. D. is sitting. 28. Ba likes ___________ TV every night. A. watches. B. watch. C. watching. D. is watching. 29. _____________ a novel at present ? A. Is he writing. B. Does he write. C. Did he write. D. Has he written. 30. I usually ___________ away at weekends. A. have gone. B. goes. C. am going. D. go. 31. The swimming pool ____________ at 9 o’clock and ___________ at 18.30 every day. A. opens/ closes. B. opens/ closed. C. opened/ closed. D. opened/ closes. 32. She sometimes ___________ vegetables at this market. A. is buying. B. has bought. C. buys. D. will buy. 33. My brother ___________ me for weeks. A. hasn’t phoned. B. didn’t phoned. C. isn’t phoning. D. not phoned. 34. The student ___________ that new word right now. A. is looking up. B. looks up. C. looked up. D. has looked up. 35. I ____________ Thomas since last week. A. have seen. B. don’t see. C. haven’t met. D. didn’t see.

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