ĐỐT CHÁY SẮT TRONG BÌNH CHỨA 3,36 lít khí oxi ở điều kiện tiêu chuẩn thu đc Ỗi sắt từ (Fe3O4) A) Lập pthh B) Tính khối lượng sắt cần dùng và khối lượng oxi sắt từ thu đc. C) Tính khối lượng KCIO3 cần dùng để điều chế lượng khí Ỗi nói trên.

Các câu hỏi liên quan

Làm dùm nha! Mị sẽ tặng 30 đ đoá đặt câu hỏi cho phần nằm trong dấu * * 1. In 201, *51,515* people attended Burning Man. (How many) .......................................................................................................................... 2. Some youngsters accidentally *knocked over one of the giants*. (What) .......................................................................................................................... 3. The highlight of the festival is *the tomato fight*. (What) ......................................................................................................................... 4. La Tomatina dates back to *1945 when an annual parade of enormous figures with big heads was passing through the streets of Bunyol.* (When) .......................................................................................................................... 5. La Tomatina in Bunol near Valencia *happens every year*. (How often) .......................................................................................................................... 6. La Tomatina takes place *on the last Wednesday in August*. (When) .......................................................................................................................... 7. The festival began *in San Francisco’s Baker Beach in 1986*. (When; Where) .......................................................................................................................... 8. It takes its name from *the ritual burning of a large wooden model of a hated person*. (What) .......................................................................................................................... 9. Burning Man lasts *one week*. (How long) .......................................................................................................................... 10. The event begins *on the last Monday in August, and ends on the first Monday in September*. (When) ..........................................................................................................................