FeSO4 + H2SO4 + KMnO4 → Fe2(SO4)3 + MnSO4 + K2SO4 + H2O cân bằng hộ với :))

Giúp mik vs mik cần gấp Cho hình bình hành ABCD có AC=2AB tại A gọi M, N theo thứ tự là trung điểm của AB, CD CM a)tứ giác AMCN là hình j ?vì sao? b) CM CA là tia phân giác của góc MCN

phương pháp tìm tâm và bán kính mặt cầu ngoại tiếp hình chóp

Nêu ví dụ về định luật truyền thẳng ánh sáng

viết lại những câu này bắt đầu bằng những từ gợi ý

Phân tích những đặc điểm, cấu tạo của bộ xương người để phù hợp với chức năng đứng thẳng và đi bằng hai chân

làm hộ mình câu 1 a chi tiết nha

I. 1. A. neighbor B. receive C. weight D. great 2. A. cloudy B. windy C. dry D. rainy 3. A. compost B. shore C. order D. pour 4. A. southern B. sunbathing C. breathe D. thunder 5. A. houses B. faces C. horses D. places II. 1. After a month, Hoa got used to ………………. in her new school. A. study B. studying C. studied D. is studying 2. She told me ……… up too late. A. don’t stay B. not to stay C. not stay D. to not stay 3. Her son was absent from school …………… of his illness last Tuesday A. because B. instead C. though D. but 4. That child ……… to go at once. A. will B had better C. has D. have 5. The front yard is …………. to play soccer in. A. small too B. so small C. too small D. very small 6. My brother feels …………… again after his operation. A. strongly B. strength C. strong D. enough strong 7. He doesn’t enjoy …………… basketball A. to play B. plays C. played D. playing III. 1. How long is it since he left school? When…………………………………………………………………….. 2. We can’t afford to buy the car. The car…………………………………………………………………… 3. We arrived too late to see the film. We didn’t………………………………………………………………… 4. If you don’t rest yourself, you will be ill. Unless…………………………………………………………………….. 5. Nam has never spoken to a foreigner before. It………………………………………………………………………… 6. What is the weight of your suitcase? How……………………………………………………………………… 7. My house is bigger than your’s. Your house isn’t………………………………………………………… 8. My father cleans the car every week. The car…………………………………………………………………… 9. “Do you know to speak English?” He asked me. He asked me…………………………………………………………………………. 10. someone should do the job tomorrow. the job…………………………………………………………………… IV. It is a custom in Britain and in most European countries to celebrate a person’s day. Members of the family and close friends are supposed to be presrent at the party. If they can’t come they may send a gift by post. At the birthday party, the peron who gives birth day party opens all the gifts in front of all the people present and thanks them for the gifts. The mother usually makes a birthday cake, or if she can’t, she may order one from a cake- shop. A mumber of candles are placed on the top of the cake and will be lighted when the party starts. The number of candles is also the age of that person. After the light is out they all sing a song “ Ahppy birthday to you….” Then they play some games or sing or dance together. ………1. Only in Britain people celeberate people’s birthday. ………2. Only dear friends and members of the family are present. ………3. Some people may send gifts if they can’t go to the party. ………4. They open the gifts in front of their friends at birthday party. ………5. Father always makes the cake for the party. ………6. You can buy a birthday cake at the cake shop. ………7. The cake is placed on the top of the candles. ………8. The candles will be lighted at the beginning of the party. ………9. The mumber of the candles is also the age of the person. ………10. They don’t sing any song at the party.

Cho Biết 5m dây đồng nặng 40gam. Hỏi 1km dây đồng nặng bao nhiêu kg? Tòa mọi người giúp mình nhé

Phân tích tiềm năng và đặc điểm phát triển ngành công nghiệp chế biến lương thực thực phẩm