Đốt cháy hoàn toàn 10,8 gam bột kim loại X (hóa trị III) thì thu được 20,4 gam oxit. Xác định kim loại X, viết phương trình hóa học của phản ứng trên và cho biết loại phản ứng?

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VIII. Read the conversation and answer the questions. Mrs Hoa: What’s your new school like? Is it big? Minh: Well. It’s very big. Mrs Hoa: How many classrooms are there in your classroom? Minh: Let me see. There are…twenty…twenty four Mrs Hoa: How many students are there in your classroom? Minh: There are forty. All of my classmates are new to me. Mrs Hoa: Are they friendly to you? Minh: Yeah. And my teacher are nice to me too. Mrs Hoa: Good. Where is your classroom? Minh: Well, it is on the second floor. Mrs Hoa: Did you enjoy your lessons today? Minh: Oh, yes. They were very interesting. Questions: 1. Does Minh like his new school? ………………………………………………………………………………………………………………………….……………………… 2. Is his class big or small? ………………………………………………………………………………………………………………………….……………………… 3.Does he know all his classmates? ………………………………………………………………………………………………………………………….……………………… 4. What are Minh’s teachers and classmates like? ………………………………………………………………………………………………………………………….……………………… 5. Did Minh have a nice first day at his new school? ………………………………………………………………………………………………………………………….………………………