Cacbon cháy trong bình đựng khí oxi tạo thành khí cacbonic. Viết PTHH và tính khối lượng khí cacbonic sinh ra trong mỗi trường hợp sau: khi có 6,4g khí oxi tham gia phản ứng khi có 0,3 mol cacbon tham gia phản ứng khi đốt 0,3 mol cacbon trong bình đựng 0,2 mol khí oxi khi đốt 6gam cacbon trong bình đựng 19,2 gam khí oxi

Cho đường tròn (O; R) có hai đường kính AB và CD vuông góc với nhau. Lấy điểm K thuộc cung nhỏ AC, kẻ KH vuông góc với AB tại H. Tia AC cắt HK tại I, tia BC cắt HK tại E, nối AE cắt (O) tại F. 1. Chứng minh 4 điểm B, H, F, E cùng thuộc một đường tròn. 2. Tính theo R diện tích tam giác FEC khi H là trung điểm OA. 3. Khi K di chuyển trên cung nhỏ AC. Chứng minh đường thẳng FH luôn đi qua một điểm cố định. Bn nào giỏi toán hình làm giúp e vs

I.Choose the word whose underlined part is pronounced differently from that of the other 1. A. sandwich B. fat C. gram D. want 2. A. soda B. carrot C. kilo D. potato 3. A. cake B. cabbage C. lake D. face 4. A. danger B. range C. glass D. change 5. A. kite B. pastime C. idea D. citadel 6. A shoulder B. south C. round D. housework 7 A. nose B. color C. mother D. Monday 8 A. tea B weak C. breakfast D. cream II. Multiple choice 1) Miss Hoa has __________ hair. a. black long b. long black c. a long black d. oval black 2) Is there _________ milk for lunch? – Yes, there is. a. any b. some c. a d. an 3) _________ is my favorite drink. a. Bread b. Oranges c. Onions d. Orange juice 4) __________ do you go to the zoo? – I never go to the zoo. a. How long b. How often c. How many d. How much 5) They ____________ late for school. a. never go b. are never c. never are d. don‟t go 6) What ’s the ___________ like in the spring? – It‟s warm. a. weather b. summer c. season d. flower 7) My sister and I __________ my homework at the moment. a. do b. am doing c. are doing d. is doing 8) How often does Phong go to the movies? - _____________________. a. Twice a week b. Yes, he does. c. No, he doesn‟t d. One a week 9) We are going to stay ________ a hotel. a. at b. for c. on d. in 10) 45. Let’s __________ to the movies. a. go b. going c. play d. to go 11) - What are we going to do this weekend? ___________ having a picnic? a. let’s b. let’s go c. why don’t we d. what about III. Supply the correct form of verbs 1. What time ……………… you (go) ………………….. to school? 2. Lan ( watch ) ……………………….. T.V three times a week. 3. Nam & Ba often ( go) ………………………. fishing on Sun

Giải giúp em câu 3 phần tự luận câu b nha. Em cảm ơn

31. “I couldn’t go to work yesterday, because my car broke down.” “You ____________ mine. I wasn’t using it.” A. could borrow B. may borrow C. could have borrowed D. needn’t have borrowed 32. Jane was going to pay for the trip, but when she saw how much it was going to cost, she____________. A. backed away B. backed up C. backed off D. back out 33. “Where’s the nearest post office?” – “________________”. A. Turn left and then turn right B. It’s about two kilometers C. It opens at nine o’clock D. It takes at least twenty minutes by bus 34. He didn’t think much and just had a fractional hesitation before saying yes. What is the opposite meaning of the underlined word? A. great B. minimal C. sectional D. incomplete 35. I’m angry because you didn’t tell me the truth. I don’t like ______________. A. deceiving B. to deceive C. having deceived D. being deceived 36. He fell heavily and was immediately conscious of ____________ pain in his right arm. A. strong B. hard C. raw D. acute 37. George wouldn’t have met Mary ______________ to his brother’s graduation party. A. had he not gone B. had not he gone C. if he has not gone D. if he shouldn’t have gone 38. The teacher gave ____________ of the students a piece of paper. A. every B. each C. few D. a few 39. We ___________ a party next week and we ____________ at least 20 people. A. are having – have already invited B. have – have already invited C. are going to have – already invite D. are having- are already inviting 40. Van Gogh suffered from depression ____________ by overwork and ill-health. A. put through B. coming about C. taken up D. brought on

em hãy viết một bài văn ngắn trình bày suy nghĩ của mình về người chiến thắng

Tuyến xe bus T6 nối Quy Nhơn – Tây Sơn – Vĩnh Thạnh được tổ chức theo cách sau đây: Xe buýt có thể chạy không dừng theo các đoạn 1, 2, 3, …, 9 km. Với mỗi đoạn trong 9 đoạn này có giá vé cố định cho trong một bảng. Ví dụ như bảng giá vé sau: Độ dài đoạn đường đi Giá vé 1 km| 12 2 km| 19 3 km| 31 4 km| 40 5 km| 61 6 km| 65 7 km| 69 8 km| 79 9 km| 90 Một hành khách muốn đi N km bằng xe buýt (1 ≤ N ≤ 1000). Yêu cầu: Hãy viết chương trình để hành khách có thể chọn những khoảng cách dừng xe hợp lý để hành trình phải trả tiền ít nhất. Dữ liệu: Vào từ tệp văn bản BUS.INP - Dòng đầu tiên ghi số N. - Dòng thứ hai ghi 9 số nguyên dương là giá tiền tương ứng của các đoạn 1, 2, …, 9 km. Kết quả: Ghi ra tệp văn bản BUS.OUT gồm một số nguyên duy nhất là số tiền ít nhất phải trả. Ví dụ: BUS.INP 5 ______________________________________ |12| 19| 31| 40| 61| 65| 69| 79| 90| BUS.OUT 50 giúp giải bài này với mọi ngư

Ai giải giúp e câu này với ạ e đang gấp😭😭 Please

VI. Choose the correct word A, B, C or D for each gap to complete the following passage. In the match (29)………. Nguyen Du Team, and Trung Vuong Club which took place last Sunday, Nguyen Du Team beat Trung Vuong Club by three goals to two. The last time the two teams met, Trung Vuong club won by three goals (30)………... nil, so Nguyen Du team were making a great discussion to win this match. In the first half of the (31)……………, Trung Vuong club was leading by two (32)………………. However, Trung Vuong Club made a number of careless mistakes during the second half. 29. A. on B. between C. of 30. A. to B. by C. for 31. A. play B. match C. performance 32. A. matches B. players C. goals IV. Write the questions for the underlined words or phrases. Ex: I get up at six every day. → What time do you get up every day? 33. Minh brushes his teeth twice a day. → 34. Simon is in a lot of pain now because he has a toothache. → 35. I felt sick after eating that food. → 36. Nga went to see the dentist last week. → V. Rewrite the following sentences, using the structure of imperative. Ex: You should go to bed early. Go to bed early. You should not stay up late. Don’t stay up late. 37. You should brush your teeth after meals. 38. You should not play soccer in the street. 39. You should wash and iron your own clothes. 40. You should not eat too much candy.

ĐỀ 1 I.Choose the word whose underlined part is pronounced differently from that of the other 1. A. sandwich B. fat C. gram D. want 2. A. soda B. carrot C. kilo D. potato 3. A. cake B. cabbage C. lake D. face 4. A. danger B. range C. glass D. change 5. A. kite B. pastime C. idea D. citadel 6. A shoulder B. south C. round D. housework 7 A. nose B. color C. mother D. Monday 8 A. tea B weak C. breakfast D. cream II. Multiple choice 1) Miss Hoa has __________ hair. a. black long b. long black c. a long black d. oval black 2) Is there _________ milk for lunch? – Yes, there is. a. any b. some c. a d. an 3) _________ is my favorite drink. a. Bread b. Oranges c. Onions d. Orange juice 4) __________ do you go to the zoo? – I never go to the zoo. a. How long b. How often c. How many d. How much 5) They ____________ late for school. a. never go b. are never c. never are d. don‟t go 6) What ’s the ___________ like in the spring? – It‟s warm. a. weather b. summer c. season d. flower 7) My sister and I __________ my homework at the moment. a. do b. am doing c. are doing d. is doing 8) How often does Phong go to the movies? - _____________________. a. Twice a week b. Yes, he does. c. No, he doesn‟t d. One a week 9) We are going to stay ________ a hotel. a. at b. for c. on d. in 10) 45. Let’s __________ to the movies. a. go b. going c. play d. to go 11) - What are we going to do this weekend? ___________ having a picnic? a. let’s b. let’s go c. why don’t we d. what about III. Supply the correct form of verbs 1. What time ……………… you (go) ………………….. to school? 2. Lan ( watch ) ……………………….. T.V three times a week. 3. Nam & Ba often ( go) ………………………. fishing on Sunday. 4. We ( not go) ………………………… to school on Sunday. 5. My brother likes jogging. He ( jog) ……………………… every morning. At the moment, he ( jog)……………………….. in the park. 6. What is she doing ? -She (cook )………………………… lunch. 7 .I often ( play) ………………. soccer with my friends after school. 8 .Nga (visit) …………………………………… Hue next week. 9.They ( do ) …………………………………….. their homework tonight. 10.Nam (visit ) ………………………………… Hue this summer vacation. IV. Match the question in column A with the right answer in column B A B 1. What weather does she like? a. I go swimming 2. How often do you read? b. She is cooking dinner. 3. What is the weather like in the spring? c. She likes warm weather. 4. What is she doing? d. Good idea. 5. How do you go to school? e. No, he doesn‟t. 6. Is it cold in the winter? f. I‟m going to visit Hue. 7. What do you do when it‟s hot? g. Yes, it is. 8. Why don‟t we go to the beach? h. Three times a week. 9. Does your father play volleyball? i. I walk to school. 10.What are you going to do this summer vacation? j. It‟s warm in the spring. V. Reading Mr Hung is an engineer. He works in Da Lat. Every morning, he gets up at five o‟clock. He has some noodles for breakfast.Then he drinks a glass of orange juice. At 6.30, he goes to work by car. He has lunch at a restaurant near his factory. He finishes his work at 4.30. He goes home and has dinner with his family. In the evening, he watches television and read. Questions: a. What does Mr Hung do?............................................ b. Where does he work?. ........................................................ c. Does he eat rice for breakfast?. ................................... d. How does he go to work?........................................................................................ e. Where does he have lunch?..................................................................................... f. Does he have dinner at a foodstall?. ......................................................................... g. What does he do in the evening?. ............................ h. Does he listen to music in his free time?. .........