user-avatar
yenchinh01
2 năm trước
cho hỗn hợp x gồm 0,3 mol mg ,x mol zn tác dụng với dung dịch y chứa 0,1 mol fe2(so4)3 ,0,2 mol cuso4 . sau khi phản ứng xảy ra hoàn toàn thu được 24g chất rắn và dd A .cô cạn dung dịch A thu được m gam muối khan . giá trị của x và m lần lượt là: A.0,2 mol và 62,8g B. 0,2 mol và 68, 2g C.0,4 mol và 62,8g D. 0,4 mol và 68,2g
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Question IX:Fill in the blank of the following passage with the words given :(10p) expensive - after - fun - temple- types - shop- vacation- -bought- thought- like Liz has just come back from her (1)…..........…….in Nha Trang. It was really wonderful. She had a lot of (2)…….........….. For Liz, the people in Nha Trang were friendly and the food was delicious. But she thought that most things there weren’t cheap. They were quite (3)…........…….. Her parents took her to see Cham (4)…..........…….and Tri Nguyen Aquarium. In Tri Nguyen Aquarium they saw some sea animals (5)…....…….sharks, dolphins and turtles. They also saw a lot of different (6)…….....…..of fish. Liz liked the colorful fish. She (7)……........…..they were the most beautiful. They bought some things from the souvenir (8)…….......…..near the exit of the aquarium. Liz’s father (9)……......…..her a cap with a picture of dolphin, and her mother bought a poster. Liz bought gifts for her friends. (10)…….......….the trip Liz didn’t feel tired at all. She had a great time! Question X: Complete the second in such a way that it is almost the same as the first(10p) 1. It took Mr. Hoang half an hour to walk to work to yesterday. Mr. Hoang spent................................................................................................... 2. What is the price of this cap? How much............................................................................................................? 3. You shouldn’t eat too much meat. You’d .................................................................................................................. 4. Lan is the youngest of the three sisters. Lan has............................................................................................................... 5. Our house is older than any other house in the living centre. Our house................................................................................................................................ . 6. Lan didn’t go to school yesterday because of her sickness. Because Lan……………………………………………………………….……………….… 7. There are eight hundred stamps in Hoa’s collection. Hoa’s collection........................................................................................................................... 8. How heavy is the chicken? What ....................................................................................................................................? 9. Shall we go to the zoo?. Let's .....................................................................................................................................! 10. Listening to music is more interesting than watching TV. I prefer................................................................................................................................ Question XI:Use the suggested words and phrases to write complete sentences (10p) Dear Nam, 11. I/ be/ pleased/ hear/ that/ you/ your family/ well. ………………………………………………………………………………............................. 12. Here/ photo/ my family/ and/ let/ me/ tell/ you/ us. ……………………………………………………………………………….............................. 13. Father/ mechanic/. He/ work/ factory/ suburb. ……………………………………………………………………………….............................. 14. He/ work/ five/ days/ a week/ Monday/ Friday. ………………………………………………………………………………............................... 15. He usually/go/ work/ motorbike/ morning/ so he/ not free/ every morning. …………………………………………………………...................................................................................................................................................................................................................... 16. In free time/ father/ often / play/ badminton/ friends. ……………………………………………………………………………… 17. mother/ teacher//. She/ teach/ Math/ school/ near/ house. …………………………………………………………………………………… 18. Brother/ 17 years/ and /he/ grade 12. …………………………………………………………………………… 19. He/ love/ collect /stamps/. He / have/ hundreds/ stamps/ collection. ……………………………………………………………………………… 20. please write/ me soon/ and tell/ your/ family. ………………………………………………………………………………

Question IV: Each of the following sentence has one mistake. Identify and correct the the mistakes in four underlines(10p) 1 . From at nine in the morning until four in the afternoon Mr. Tuan works in the fields with his father. 2.There is fewer work in the evening than there is in the morning. 3.My dad always has a three-weeks vacation. 4.What is Hoa unhappy? - Because She misses her family very much. 5.The doctor says you should spend a little time to play video games . 6.The public library in the city has thousand of good books. 7.What does the new student like ? -oh, she is tall and beautiful. 8.Ba is in the class 7A and he enjoys the school very much 9.My father always has a lot of houseworks to do 10.There is a ten-floors building in front of my house Answer: 1. -> 6. -> 2. -> 7. -> 3. -> 8. -> 4. -> 9. -> 5. -> 10. -> Question V:Provide the correct form of the verbs in brackets(10p). 1. You ( go ) out last night? – Yes. I ( go ) to the cinema but I ( not enjoy ) the movie very much. ....................................................................................................................................................... ..................................................................................................................................................... 2. It often ( take) me twenty minutes to go to school. How long it ( take ) you , Linh? ..................................................................................................................................................... 3. My sister ( go ) to the Youth club every weekend. She enjoys ( play ) sports very much. ..................................................................................................................................................... 4. Be quiet! I ( want ) to hear the news. ..................................................................................................................................................... 5. My father ( play ) roller- skating when he ( be) a child. ..................................................................................................................................................... Question VI:Provide the correct form of the words in CAPITAL LETTERS(10p) 1. English is an.....................................and important subject. INTEREST 2. In electronics they learn to repair......................... appliances. HOUSE 3. The most popular............................ at recess is talking. ACT 4. Hoa is having a ............................. check-up. MEDICINE 5. The nurse wanted to know Nga’s height and ................. WEIGH 6. Hoa is the …….......….. student in her school. GOOD 7. I’d like a nice.........................orange. JUICE 8. Edison’s most famous............................was thethe electronic bulb. INVENT 9. This dictionary is very .................... for you to learn english. USE 10. I have .............. time to play than my friends. LITTLE

Question I:Choose the word that the underline parts ponounced differently from the others(5p)-by circling A, B, C or D 1. A. new B. sew C. few D. knew 2. A. plays B. looks C. wants D. helps 3. A. decided B. preferred C. listened D. enjoyed 4. A. much B. drug C. buffalo D. future 5. A. horrible B. hour C. hundred D. hold Question II:Choose the word that is different from the rest in each group. (5p) -by circling A, B, C or D 1. A.ill B.sick C.sad D.unwell 2. A.doctor B.nurse C.dentist D.teacher 3. A.tablet B.chocolate C.medicine D.pill 4. A.virus B.flu C.headache D.stomachache 5. A.couching B.sneezing C.disease D.runny nose Question III:Choose the word or phrase which best completes each sentence(10p) -by circling A, B, C or D 7. I bought this dress at the .............on Hang Bai street. A. clothes’store B. store of closes C. clothes store D. closing store 8. Isn’t it easy to learn English well ? A. No, it is B. No, it does not C. Yes, it is D. Yes. it does 9. There are two churches in the town and ...............of them are extremely old. A. each B. all C. both D. most 10. When they.....children, they often played with together. A. was B. will C. are D. were 11. Mr.Nam ................to work yesterday. A. wasn’t drive B. not drive C. didn’t drove D. didn’t drive 12. The news on TV last night...........................very good. A. was B. has C. were D. be 13. Lan did not know the world. Hoa didn’t, .............. A. so B. neither C. either D. too 8. My sister will be 16 ….. Sunday ………….. A. on - May 25th B. on - May 25 C. in - 25th May D. in - May 25 9. If he eats all that food, he eats ....................... A. quite much B. too many C. quite many D. too much 10. Mr.Robinson speaks Vietnamese very...................... A. skillfully B. good C. fluently D. best

VIII/. Read the following passage then choose the best answer to fill in the blank: In the United States of America, the national language is (1)....... English. Four hundred years ago, some English people came to North America to live and they brought (2)....... language to this country. Now in the USA, people speak (3)...........English . Most of the words are the (4)............ in American and British English, but the American say some English words not as people (5)........... in England. Canada is (6).......... to the North of the United States of America. It is the larger (7)......... the United States. In Canada, many people (8)............ English because they also came from England many years (9)......... But in some parts of Canada, people speak (10)............ because they came from France. 1. A. also. B. like. C. as. D. not. 2. A. French. B. English. C. Chinese. D. Canadian. 3. A. British. B. American. C. Russian. D. Chinese. 4. A. various. B. similar. C. same. D. like. 5. A. do. B. say. C. talk. D. speak. 6. A. lies. B. situated. C. at. D. in. 7. A. than. B. as. C. more. D. less. 8. A. say. B. tell. C. talk. D speak. 9. A. ago. B. later. C. there. D. here. 10. A. France. B.French. C. Russian. D. Italian. IX/. Use given words to rewrite the second sentence that the meaning not change: 1. It took Mr. Hoang half an hour to walk to work yesterday. =>Mr. Hoang spent....................................................................................................... 2. What is the price of this cap? =>How much....................................................................................................................? 3. You shouldn’t eat too much meat. => You’d............................................................................................................................. 4. Lan is the youngest of the three sisters. =>Lan has ........................................................................................................................... 5. Our house is older than any other house in the living centre => Our house....................................................................................................................... 6. Mai usually works hard. => Mai is usually a…………………………………………………………..…………… 7. There are eight hundred stamps in Hoa’s collection. => Hoa’s collection............................................................................................................. 8. How heavy is the chicken? =>What .............................................................................................................................? 9. How much is this book? =>What is...........................................................................................................................? 10. Listening to music is more interesting than watching TV. => I prefer.............................................................................................................................

IV/. Give the correct form of the verbs in brackets to complete the following sentences: 1/. We can’t go out now because it (rain ) …………………… . 2/. They (meet) .......................their teacher at the moment 3/. We (visit ) ………………the museum at the moment. We (visit ) …………..it once a year 4/. Hai ( not write ) ……………….. to her parents last week. She ( phone ) …..……. them. 5/.Duy ( not visit)… …the museum with his class last Sunday because he (catch ) ……. a cold. 6/. How much it ( cost ) …………….to mail a latter to England ? 7/. Take these pills and you ( feel ) ……………….. better then, Ha . V/. Each sentence below contains an error. Underline it and write the correct answer in the space provided : 1. From at nine in the morning until four afternoon Mr. Tuan works in A B C the fields with his father. D 2. There is fewer work in the evening than there is in the morning A B C D 3. My Dad always has a three-weeks vacation A B C D 4. Mr Ba soon got used to travel to work by bicycle A B C D 5. The doctor says you should spend a little time to play video game. A B C D 6. The public library in the city has thousand of good books A B C D 7. What does the new student like? - Oh, she is tall and beautiful A B C D 8. Ba is in class 7A and he enjoys the school very much A B C D 9. My father always has a lot of houseworks to do A B C D 10. There is a ten-floors building in front of my house A B C D 1.................. 2................. 3................. 4................. 5.................. 6................... 7.................... 8.................... 9................... 10................. VI/. Fill in each numbered blank with one suitable word Americans like sport very much. One of the (1)............. popular kinds of sports in Autumn is football. All the high schools(2)........... universities have their own teams. In winter the most popular kind of sports (3)........... basketball. There is usually a match every evening in one school gymnasium or another. In some parts of the United States there is a lot of (4).............. and ice. Many people like skiing and skating. In the other two (5)..........., millions of Americans enjoy baseball. The schools have their games in (6)..........., but the most important professional games are played during summer. Many people listen to the games (7) ...... the radio, watch them on television or read about them (8) ...........the newspapers. Some also play tennis or golf and others (9) ......... fishing. They like to stay outdoors (10)........it is warm during the months of June, July and August. VII/ Use the words given to complete the following sentences : 1. you / better / eat / too / candies / because / they / not good / your teeth ........................................................................................................................................ 2. I / have / American / friend. …………………………………………………………………………………………….. 3. Last week / they / moved / new house/ city …………………………………………………………………………………………….. 4. Last year / brother / work / engineer / printing factory. ............................................................................................................................................. 5. What / wide / the West Lake? ………………………………………………………………………………………………….. 6. this morning / I / eat / bread / and / drink milk / breakfast. …………………………………………………………………………………………………. 7. Walking / fun / easy and inexpensive activity. ………………………………………………………………………………………………… 8. Most / world’s surface / water. …………………………………………………………………………………………………. 9. Would / like / some coffee? ………………………………………………………………………………………………… 10.video games / good fun / but players / must / careful. ………………………………………………………………………………………………..

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team