Đun nóng hỗn hợp gồm 11,2g bột sắt và 3,2g bột lưu huỳnh, cho sản phẩm tạo thành vào 500ml dung dịch HCl thì thu được hỗn khí B và dung dịch A. a.Tính tỉ khối của hỗn hợp A so với H. b.tính Cm của dd HCl đã dùng

Các câu hỏi liên quan

Ex 5: Make questions for underlined words. 1. A new hospital will be built here by Russian workers. (by Russian workers) -> ........................................................................................... 2. She is looking for her book. (her book) -> ............................................... 3. Those pupils look very eager. (very eager) -> ................................................... 4. The girl left for London last week. (last week) -> .......................................................... 5. Mr Green takes his children to town every week. (every week) -> .................................................................................... 6. The Elephant Race Festival is held in Dak Lak. (The Elephant Race) -> ............................................................................... 7. Nick chose the festival because he would like to see elephants racing. (because he would like to see elephants racing) -> ......................................................................................................................... 8. They are playing in Mr Green's garden. (Mr Green's) -> ................................................................... 9. Miss White bought a lot of pictures books. (a lot of) -> ......................................................................... 10. Many people attended Burning Man. (Many) -> .................................................................. 11. This is Mai's book. (Mai's) -> ..................................