user-avatar
hothingoctrang2002
2 năm trước
Đốt cháy hoàn toàn 1,6 g lưu huỳnh trong bình chứa khí oxi. a. Viết phương trình phản ứng xảy ra. b. Cho biết phản ứng trên thuộc loại phản ứng hóa học nào? Gọi tên sản phẩm thu được. c. Tính V (lít) khí O2 ở đktc cần dùng cho phản ứng trên. Biết O = 16; S = 32.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Giúp mik với , mik cần gấp lắm Ex 1: Change the following sentences into passive voice. 8. She left her relatives five million pounds. 9. The shop assistant handed these boxes to the customer. 10. The board awarded the first prize to the reporter. 11. Have you sent the Christmas cards to your family? 12. The committee appointed Alice secretary for the meeting. 13. He hides the broken cup in the drawer. 14. They keep this room tidy all the time. 15. They all voted the party a great success. 16. We gave Ann some bananas and some flowers. 17. They moved the fridge into the living room. 18. She brought some cups of tea to the visitors in the next room. 19. They find the new project worthless. 20. The secretary didn’t take the note to the manager. Ex 2: Change the following sentences into passive voice. 1. My father waters this flower every morning. 2. John invited Fiona to his birthday party last night. 3. Her mother is preparing the dinner in the kitchen. 4. We should clean our teeth twice a day. 5. Our teachers have explained the English grammar. 6. Some drunk drivers caused the accident in this city. 7. Tom will visit his parents next month. 8. The manager didn’t phone the secretary this morning. 9. Did Mary buy this beautiful dress? 10. I won’t hang these old pictures in the living room. 11. The German didn’t build this factory during the Second World War. 12. The Greens are going to paint this house and these cars for Christmas Day. 13. Ann had fed the cats before she went to the cinema. 14. The students have discussed the pollution problems since last week. 15. Have the thieves stolen the most valuable painting in the national museum? 16. Some people will interview the new president on TV. 17. How many languages do they speak in Canada? 18. Are you going to repair those shoes? 19. He has broken his nose in a football match. 20. Have you finished the above sentences? Ex 3: Change the following sentences into passive voice. 1. I had my nephew paint the gate last week. 2. She will have Peter wash her car tomorrow. 3. They have her tell the story again. 4. John gets his sister to clean his shirt. 5. Anne had had a friend type her composition. 6. Rick will have a barber cut his hair. 7. I will get the dressmaker to make a new dress

I. Find the word which has a different sound in the underlined part. 1. A. host B. honor C. hockey D. horror 2. A. badminton B. swallow C. challenge D. ballet 3. A. teammate B. reading C. creating D. seaside 4. A. athlete B. author C. length D. southern 5. A. touch B. foul C. account D. mount II. Choose the correct option A, B, C, or D to complete the sentences. 1. Most people enjoy ____________ abroad and having the chance to stay in some exotic cities. A. travel B. to travel C. travelled D. travelling 2. Every time my father flies to America, he gets really bad ____________________________. A. jet lag B. journey C. touchdown D. mix-up 3. Do you think cycling from Ha Noi to Ho Chi Minh City with some friends is ___________? A. interest B. interestingly C. interesting D. interested 4. An obvious benefit of tourism is that it plays a key role in economic _______ of every nation. A. growth B. increase C. raise D. strong 5. Thanks ________________ the widespread use of modern means of transport, people have more choices of holiday destination and can now visit even the remotest parts of the world. A. for B. to C. of D. upon 7. Tourism has certainly __________ an important factor in the development of many countries. A. to become B. become C. became D. becoming 8. Tourism bring cultural benefits, as travelers learn about the history and culture of a place, and ____ them around the world. A. spread B. move C. speak D. make 9. They haven’t ………………… about where to go on their honeymoon. A. promote B. made up their mind C. stimulating 10.You can see a lot of beautiful ………………… in Son Doong Cave in Vietnam. A.stalagmite B. round trip C. stimulating III. Use simple past or present perfect to complete the following sentences: 1. Her English ( improve ) ……………………………… recently 2. How many pages ………… you (read) ………………………… so far? 3. We (finish) ……………………………………… our homework two hour ago 4. …………………you (be) …………………… to Rome? 5. I (see) ………………………………………… him several times on TV 6. What ……………… you (do) …………………… last night? 7. This is the first time I (visit) …………………………… the city 8. They (buy)………………………………… the garden some days ago 9. I (learn) ………………………… English since I (be) …………………… 11 years old 10. Be careful! I (just clean) ……………………………………… the floor IV. Rewrite the following sentences with the words given: 1.Minh last wrote to his pen pal five months ago. => Minh hasn’t ………………………………………………………………………… 2.The last time we visited Kuala Lumpur was 3 years ago. => I haven’t ………………………………………………………………………….…… 3. When did you study English? => How long …………………………………………….………………………………? 4. They began building this house 2 months ago => They have ……………………………………………………………….…………… 5. Lan hasn't written to Maryam for a month. -->Lan didn't....................................................................................................................... 6. We haven’t been to the park for 2 months --> The last time ……………………………………………………………..………….. 7. It’s five years since we last met each other --> We…………………………..………………………………………………………. 8. How long have you learnt French ? -->How long ago..............................................................................................................? V. Choose the correct word A, B, C, or D for each gap to complete the following passage. New Orleans is an old city in the southern part of the US. It is (1)___________ for its old-fashioned streets and building and jazz music. It used to (2)___________ millions of tourist every year. But all of this (3)_________ in August of 2005. A nasty hurricane named Katrina hit the southern part of the US. New Orleans suffered the most damage (4) _______ the storm. New Orleans is a city but built (5)____________ sea level , so it has levees – was built to keep sea from flowing into land. However, Katrina destroyed these levees and the city eventually became flooded (6) _______ sea water. More than 100 people were dead and the city was (7) _______ destroyed. Houses were gone, building were ruined, and cars were damaged. Experts (8)__________ that it will cost more than 26 billion dollars to rebuild the city. But hope is still left for the people of New Orleans. People in the US and all over the world have sent money and supplies to help them with the rebuilding. Will New Orleans be rebuilt as the beautiful city it once was? We will just have to wait and see. 1. A. good B. famous C. lovely D. beautiful 2. A. absorb B. keep C. attract D. call 3. A. changed B. change C. changes D. have changed 4. A. with B. at C. of D. from 5. A. below B. under C. on D. at 6. A. with B. from C. by D. of 7. A. entirely B. completely C. totally D. thoroughly 8. A. say B. tell C. speak D. house

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