user-avatar
thiennhan09090
2 năm trước
Câu 10: Đốt cháy 11,2 gam sắt trong lọ khí oxi, theo phản ứng : 3Fe + 2O2 -> Fe3O4. a. Tính khối lượng oxit sắt từ tạo thành ( Fe = 56, 0 = 16) b. Thể tích khí oxi tham gia ( đktc) là bao nhiêu * 1 điểm a. 15,47 (gam) và b. 0,896 (lít) a. 46,4 ( gam) và b. 4,48 (lít) a. 2,32 ( gam) và b. 2,24 (lít) a. 1546 (gam) và b. 2,24 (lít)
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

5. People throw______ billions of cans every year. ( away/ out/ off) 6. Glass ____ up, melted and made into new glassware.(is broken/ are broken/ is breaking) 7. It’s difficult___ your directions. (follow/to follow/following) 8. The lane is ______ Nguyen Trai street and Tran Hung Dao street. ( between/ on/ beside) 9. He worked through the summer________ catch up with his studies. ( in order to/ in order/ so that ). 10. The government prevented people from___ drink cans away. (throw/ to throw/ throwing) II.Change into passive form: ( 5 marks) 1. John loves this dog. _________________________________________________ 2. The students will hold a meeting before the Teacher’s Day. 3. How do people learn languages?? ____________________________________________________ 4. Most children like cartoons. _________________________________________________ 5.Mr Robinson teaches us how to speak English properly. _______________________________________________________

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team