Khử a gam oxit sắt bằng CO ở nhiệt độ cao, thu được 3,36 gam sắt và 1,792 lít CO2 (đktc). Xác định công thức hóa học của oxit sắt và tính a ? Giúp em với các tiền bối ơi Mik cho cảm ơn, 5* và CTLHN cho bạn nào trả lời đúng và nhanh nhất nha

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1. My phone number isn’t in the directory, so people don’t ring me up. If ……………………………………………………………………………….. 2. She is always late because she has not got a watch. If ……………………………………………………………………………………….. 3. I can’t go on holiday because I am busy If ………………………………………………………………………………………….. 4. I don’t know her number , so I can’t phone her. If ………………………………………………………………………………….. 5. People don’t understand him because he doesn’t speak clearly. If ………………………………………………………………………………….. 6. I am in a hurry so I won’t stay for dinner. If ……………………………………………………………………….. 7. He doesn’t have time to do exercises, so he is not healthy. If ………………………………………………………………………………………….. 8. John is fat because he eats so many sweets. If ……………………………………………………………………………………….. 9. You drink much coffee, so you can’t sleep. If ……………………………………………………………………………………….. 10. I won’t buy the new car because I don’t have enough money . If …………………………………………………………………………………………….. 11. Tom is lazy, so he often get bad marks. If …………………………………………………………………………………………….. 12. You can’t look the word up because you don’t bring the dictionary. If ……………………………………………………………………………………………….. 13. She doesn’t pay attention to her cooking , so the food is horrible. If ………………………………………………………………………………………….. 14. I don’t have a key, so I can’t get in the house. If ………………………………………………………………………………………….. 15. The weather isn’t nice today, so we will not go to the zoo. If ………………………………………………………………………………………….. 16. Lan doesn’t have a bike, so she walks to school. If ………………………………………………………………………………………….. 17. My son doesn’t have a typewriter, so he can’t type it myself. If ……………………………………………………………………………………………..