Cho m gam hỗn hợp X gồm Al, Fe, Mg tác dụng vừa đủ với 11,2g lưu huỳnh trong điều kiện không có không khí thu được 21,9g hỗn hợp sản phẩm. Nếu cho 16,05g hỗn hợp X tác dụng hoàn toàn với 210 lít dung dịch hỗn hợp chứa HCl xM và H2SO4 2x M thu được a gam muối. Tính m, x, a?

Các câu hỏi liên quan

III. Rewrite the sentences without changing their meaning. 21. Although Tom was a poor student, he studied very well. ð In spite of .................................................................................................................. 22. Mary could not go to school because she was sick. ð Because of ................................................................................................................ 23. Although the weather was bad, she went to school on time. ð Despite ...................................................................................................................... 24. My mother told me to go to school although I was sick. ð In spite of .................................................................................................................. 25. Because there was a big storm, I stayed at home. ð Because of ................................................................................................................ 26. Tom was admitted to the university although his grades were bad. ð Despite ...................................................................................................................... 27. Although she has a physical handicap, she has become a successful woman. ð Despite ...................................................................................................................... 28. In spite of his good salary, Tom gave up his job. ð Although ................................................................................................................... 29. Though he had not finished the paper, he went to sleep. ð In spite of .................................................................................................................. 30. In spite of the high prices, my daughter insists on going to the movies. ð Even though ...............................................................................................