Hòa tan hoàn toàn 27,8 g hỗn hợp Fe, Al vào dd H2SO4 đặc, nóng có dư thu được 20,16 lít SO2 (đktc). a. Tính % khối lượng mỗi kim loại trong hỗn hợp. b. Tính khối lượng dd H2SO4 80% đã dùng

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Câu 1: Lan doesn’t have homework today. She is …………… TV all the evening. A. watches B. watching C. going to watch D. watch Câu 2: ………….. are you going to stay? – At a hotel. A. Where B. What C. When D. Why Câu 3: ………… are you going to stay? – For two weeks A. What B. Where C. How long D. How often Câu 4: We are going to visit the ………. in Hue. A. houses B. garden C. sky D. citadel Câu 5: ………. are they going to do in Nha Trang? They are going to swim there. A. What B. Where C. How long D. How often Câu 6: I’m going to ………… a movie to night. A. do B. look C. see D. go Câu 7: She is going to ………… a picnic in the mountain. A. have B. has C. take D. takes Câu 8: I want to travel ……… car. A. to B. by C. do D. is Câu 9: We are planning our ………….. vacation. A. camp B. hotel C. picnic D. summer Câu 10: We sometimes ………… sailing gin the fall. A. do B. make C. go D. take Chọn một câu đúng trong hai câu dưới đây: Câu 11: A. Nam wants go to the park. B. Nam wants to go to the park. Câu 12: A. How are you going to travel? – By car. B. What are you going to travel? – By car. Câu 13: A. What are you going to do tomorrow? B. What are you going to do on tomorrow? Câu 14: A. Do you see a movie tonight? – Yes, I am. B. Are you going to see a movie tonight? – Yes, I am. Câu 15: A. They are going to stay with their uncle and aunt. B. They are going to stay at their uncle and aunt. Đọc đoạn văn sau và chọn đáp án đúng cho các câu hỏi: Nam and Minh are going to have a trip. First, they are going to visit Da Lat for 3 days. Nam’s going to stay at Minh’s house. They are going to go around the city by horse. Next, They are going to Nha Trang. They are going to swim and play soccer on the beach. There is a small house near the sea for them to stay for 2 days. Finally, they are going to visit Ho Chi Minh City. They are going to stay at a hotel for 3 days. They are going to Dam Sen Park and play a lot of games. first: đầu tiên next: tiếp theo finally: cuối cùng Câu 16: Where are Nam and Minh going to have visit first? A. HCM City B. Ha Noi C. Da Lat D. Nha Trang Câu 17: How are they going to go around the city? A. by car B. by motorbike C. by horse D. walking Câu 18: What are they going to do in Nha Trang? A. swimming and playing soccer. B. playing a lot of games. C. staying at a hotel. D. going around the beach. Câu 19: Where are they going to stay in Ho Chi Minh City? A. a hotel B. a house C. a camp D. a school Câu 20: How long are they going to stay in Ho Chi Minh City? A. for 2 days B. for 3 days C. for 4 days D. for 5 days.