Hẹp mi ạ ko cần giải thích mà giải thích càng tốt Hộ em vs ạ mau lên nhá

Cho 4,4 gam hỗn hợp Ca và CaO tác dụng với nước dư thu được 1,68 lít khí ở đktc. a. Tính khối lượng bazơ thu được sau phản ứng. b. Lượng khí thu được cho đi qua 8g sắt (III) oxit. Tính khối lượng chất rắn sau phản ứng.

Việc phân nhóm thức ăn không bao gồm nhóm nào

III. Put the verbs in brackets in the correct tense form. 1. School (finish) ......... at 4.30 p.m every day. 2. Listen! ......... they (sing) ......... in the classroom? 3. ......... you often (eat) ......... lunch in the school canteen? 4. We ( visit ) ………… Ngoc Son Temple many times. IV. 1. Read, then complete the passage. Use the words provided farm country morning with does sometimes Hoa’s family live in the (1)__________ . Her father is a farmer. He grows rice, vegetable, and raises cattle, such as cows, buffalo and pigs. Her mother is a homemaker. She (2)_________ the housework, takes care of the family and (3)__________ helps on the farm. Both her father and mother are busy from (4)__________ till night. In her free time, Hoa helps her parents with the chores around the house. She loves farm work, too. Life on a (5)_________ is hard and busy, but in return, they enjoys fresh air and the quiet of the country. 2. Read the passage and then choose the best answer. A robot cannot think or do things alone. People use a computer to control it. Today, robots are not very popular because they are too expensive, but they are very useful. They can help us save a lot of time and work. A robot can do the same work for 24 hours, and yet, it does not complain or get tired. In the US, people use robots to guard some important places. These robots can listen to certain noises and send signals for help if there’s trouble or danger. In Japan, people use robots in factories to build cars. In the future, scientists will design many types of intelligent robots. Their robots will be able to do many more complicated things. However, some people do not like robots. They fear that one day robots will be too powerful. 1. Why do people use a computer to control a robot? A. Because it can save time and work. B. Because it cannot think or do things alone. C. Because it is too expensive. D. Because it is very useful. 2. Which of the following statements is NOT TRUE according to the text? A. People use computers to control robots. B. Robots cannot do the same work for 24 hours. C. Robots do not get tired of working. D. People use robots to guard some important places in the US. 3. The word “it” in the text refers to __________. A. a robot B. a computer C. work D. the US 4. In Japan, people use robots in factories to __________. A. guard important places B. do many more complicated things C. build cars D. listen to certain noises 5. Some people fear that one day robots __________. A. will be busier than humans B. will be able to do complicated things C. will have too much power D. will make too much noise

Khử 24 gam hỗn hợp đồng (II) oxit và sắt (III) oxit bằng khí hidro đến khí phản ứng xảy ra hoàn toàn. Biết trong hỗn hợp, đồng (II) oxit chiếm 33,33% về khối lượng. Hãy tính: a) Thể tích khí hidro (đktc) cần dùng. b) Khối lượng mỗi kim loại thu được sau phản ứng c) Cho toàn bộ lượng kim loại thu tác dụng với dung dịch có chứa 10,95g axit HCl. Tính khối lượng muối thu được sau phản ứng.

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Các cuộc đấu tranh tiêu biểu của nhân dân ta từ năm 1858 đến 1873? Giúp mình với, mình cần gấp!

1. Many students …………….. aerobics to keep fit. A. have B. go C. play D. do 2. We will have a …………….. to take care of our health. A. home robot B. doctor robot C. teaching robot D. worker robot 3. In the future , I will live ………………….because I like swimming. A. in the mountain B. on the Moon C. on the ocean D. under the ground 4. My future house will have a hi-tech robot to ……………………..the floors. A. clean B. cleaning C. cleaned D to clean 5. We might have a ……………… TV so we can watch TV programmes from space. A. wire B. wireless C. wiring D . wires 6. Hoa has never ……………………… to London . A. been B. is C. was D. be 7. If we throw trash on the road, we will_________our environment. A. pollution B. pollute C. polluting D. to pollute 8. They couldn’t go on a picnic ______________the weather was bad. A. because B. when C. but D. Or

Fanart Eren Tuần sau học thể dục qua zoom, tưởng tượng ae đứng nhún nhún tc màn hình rồi tán chuyện với nhau, nghĩ mà thấy trkầm ckảm

I. Arrange the words into the sentences (2ms) 1. want/ Tom/ Mary/ and/ glasses/ two/ of/ water. .................................................................... 2. sister/ my/ going/ is/ to/ live/ country/ the/ in. ................................................................. 3. going/ dinner/ tonight/ is/ have/ to/ where/ Lan? .................................................................... 4. the/ spring/ in/ what/ weather/ is/ like/ the? ......................................................................... 5. building/ tallest/ the/ is/ this/ city/ the/ in/ world. ........................................................................... 6. Lan's house/ smaller/ is/ house/ my/ than. .................................................................... 7. she/ never/ with/ camping/ goes/ her/ friends. ..................................................................... 8. often/ she/ go/ does/ how/ cinema/ to/ the? ....................................................................