Cho 61,2 gam hỗn hợp Cu và Fe 3 O 4  tác dụng với dung dịch HNO 3    loãng đun nóng  và khuấy đều . Sau khi các phản ứng xảy ra hoàn toàn , thu được  0,15 mol NO và dung dịch Y và còn lại m gam kim loai . Cô cạn dung dịch Y , thu được 151,5 gam  muối khan. Giá trị của m bao nhiêu?

Cái gì chặt không đứt, bứt không dời, phơi không khô, và đốt không cháy giúp em vs

I. Odd one out. Which underlined part is pronounced differently in each line? (1m) 1. A. idea B. mind C. time D. win 2. A. show B. now C. how D. cow 3. A. prepared B. polluted C. watered D. recycled 4. A. thank B. that C. this II. Choose the best answer by circling A, B, C or D. (1m) D. those 5. If the weather ……………… good, I ……………… camping with classmates. A. is / go B. is / will go C. will be / go D. will be / will go 6. Walking to school will help ……………… air pollution. A. reduce B. reuse C. recycle D. refill 7. He likes playing table tennis, ……… he can’t play it today. A. and B. or C. so D. but 8. The food is very ……………… A. long B. delicious C. noisy D. historic 9. He has never ………………. his keys because he lost them. A. see B. seeing C. seen D. saw 10. London is…………….. than Ho Chi Minh city. A. big B. biger C. biggest D. bigger 11. She ……………… aerobics now. A.is doing B. doing C. do D. does 12. Students …................ use a dictionary during the test. It’s forbidden. A. can’t B. mustn’t C. might not D. won’t III. Complete the sentences with the correct form of the verbs in the brackets. 13. We will make the air dirty if we (use) ……………… the car all the time. 14. If we pollute the air, we (have) ……………………… breathing problems. 15. This robot will be able to (recognize) ………………… our faces when the scientists improve it. 16. He has never (see) ……………….. his keys because he lost them. 17. She has (be) ………………… to Da Lat three times. 18. We might (go) ……………… to the Moon in the future. 19. If it (be) ….................... nice tomorrow, we (go) …................ on a picnic. 20. …..............you ever (see) …............... a real robot ? 21. If we sit too far away from the screen I (not be) …………… able to see the film. 22. My mother (drive) …............. me to school everyday. IV. Combine the sentences, using the suggested words : 23. I don’t like watching news. It’s boring ( because) => ............................................................................................................................................... 24. You can watch The Pig Race. You can watch Who’s Faster. (or) => ............................................................................................................................................... 25. Lan can sing very well. She can’t play the piano. (although) => ...............................................................................................................................................

cần gấp lw mọi người ak!!! giúp với nhó

làm nhanh hộ mik hứa vote 5*+ ctlhn

Nhiều ng còn chưa hiểu rõ: Học đi đôi vs hành và vì sao ta rất cần phải "Theo điều học mà lm ".Em hãy viết bài văn nghị luận đề nghị đề giải đáp những thắc mắc trên

giải thích chi tiết có ngay hay nhất nhé

giúp mình 2 câu dưới với mọi người hạn chót nộp bài là 19h tối nay rồi ạ :((

1.The workers are buiding a super market on ourstreet. -> A super market …………………………………………………………………………….................................. 2.We haven’t visited Hue for a year. -> The last time …………………………………………………………………………………………………….. 3.We are going to have a mechanic repair our car. -> We are going to have ……………………………………………………………………………………………. 4.He hasn’t written to his aunt for 10 years. -> It is ………………………………………………………………………………………………………………. 5.Computers are used to design new models. -> People …………………………………………………………………………………………………………….. 6.Jack London didn’t write the novel “The adventures of Tom Sawyer”. -> The novel” The adventures of Tom Sawyer “ …………………………………………………………………. 7.My mother spent three hours making a dress. -> It took ……………………………………………………………………………………………………………. 8.They have changed the date of the meeting. -> The date ………………………………………………………………………………………………………….. 9.They believe that he took me to the hospital. -> He ……………………………………………………………………………………………………………….… 10.My daughter has to finish all her homework before school. -> All my daughter’s home ……………………………………………………. Help me please!!

1. He broke my watch. A. My watch were broken. B. My watch be broken. C. My watch is broken.D. My watch was broken. 2. The teacher explained the rule to the student. A. The rule was explained to the student. B. The students were explained the rule. C. The students were explained the rules. D. A and B are correct 3. He often asks me to help him. A. He is often asked to help them. B. They are often asked to help me. C. I am often asked to help him. D. I am often asked him to help me. 4. His friends never forgave his betrayal. A. His betrayal were never forgiven by his friends. B. His betrayal was never forgiven by his friends. C. His betrayal was never forgave by his friends . D. His betrayal never forgave by his friends. 5. I am sure we’ll settle the matter easily. A. I’m sure the matter will settle easily. B. I’m sure the matter will be settled easily. C. I’m sure the matter will settled easily. D. I’m sure the matter won’t be settled easily. 6. We sent for the police. A. The police was sent for B. The police was sent. C. The police were sent for. D. The police was sent for us 7. They speak much about this book. A. This book is much spoken about. B. This book is much spoken. C. This book is much about spoken. D. This book are much spoken about. 8. Have they tested all the machines? A. Have all the machines be tested? B. Have all the machines been testing? C. Have all the machines been tested? D. Have all the machines been being testing? 9. Does he realize that they are laughing at him? A. Is he realized that he is laughing at? B. Is he realized that he is being laughed at? C. Does he realize that he is laughing at? D. Does he realize that he is being laughed at? 10. The manager offers me several jobs. A. I was offers several jobs. B. I am offered several jobs. C. Several jobs are offered to me. D. B and C are correct. 11. We found that they had cancelled the soccer match. A. We found that the soccer match had been cancelled. B. The soccer match had been cancelled. C. The soccer match was found that had been cancelled. D. The soccer match was found to have been cancelled by us. 12. “Did Shakespeare write this play?” A. Did this play be written by Shakespeare? B. Was this play written by Shakespeare? C. This play was written by Shakespeare. D. Did this play Shakespeare write? 13. Which book do the students love? A. Which book are done love by the students? B. Which book is the students loved? C. Which book are loved by the students? D. Which book is loved by the students? 14. How many slums are they going to clear? A. How many slums are being gone to clear? B. How many slums are being cleared? C. How many slums are going to clear? D. How many slums are going to be cleared?