phân tử hợp chất hữu cơ A có 2 nguyên tố khi đốt cháy 3 gam chất A thu được 5,4g H2O biết tỉ khối của A so với khí hidro là 1,5 xác định CTPT và viết CTCT của A

viết 4 phương trình mà sản phẩm là a, oxit kim loại b, oxit phi kim c, oxit và nước

làm giúp mk với ạ...............

viết các số theo thứ tự từ bé đến lớn các số là 8/5 ; 5/2 ; 3/5 ; 4/9 ;1.9 ;0,9 ; 17%

IV. Chọn một trong các từ thích hợp sau để điền vào chỗ trống: Although, though, even though, despite, in spite of 1. The children slept deeply ________________ the noise. 2. Jane rarely sees Alan ________________ they are neighbors. 3. Kate did not do well in the exam ________________ working very hard. 4. ________________ I was very hungry, I couldn’t eat. 5. ________________ the difficulty, they managed to solve the math problem. 6. Liza never talked to him ________________ she loved him. 7. ________________ it was cold, Marie didn’t put on her coat. 8. Clare did the work ________________ being ill. 9. ________________ the weather was bad, we had a good time. 10. ________________ all our hard work, a lot of things went wrong. 11. ________________ we had planned everything carefully, a lot of things went wrong. 12. I went to work the next day ________________ I was still feeling ill. 13. She accepted the job ________________ the low salary. 14. I managed to sleep ________________ the hotel was noisy. 15. He runs fast ________________ his old age. 16. ________________ she is beautiful, everybody hates her.

Giải giúp mk vs ạ. Mk cảm ơn nhiều

(x+2)^2/2x-3 - 1=x^2+10/2x-3 x^2-6/x=x+3/2 x-8/x-7=1/7-x+8 1-x/x+1 + 3=2x+3/x+1 Giải PT hộ em ạ Hứa vote 5 sao cho ai trả lời đúng

Làm giúp mình hết luôn nha mình đang cần gấp Mình cảm ơn nha

làm giúp mk với ạ...............

1 how..............going to korean restaurant a to b for c about d fom 2 will he miss his mom a cant b wasnt c isnt d wont 3learn/write/literature/about/essays/in/and/we/books/the ..................................................................................................... 4the bell/into/the students/ten/and/go/past/rings/all/the yard/half/at ......................................................................................................................... 5play/the/is/room/the guitar/Ba/in/learning/music/to ............................................................................................ 6dinner/like/come/would/to/house/you/to/for/my ......................................................................................... 7 mấy anh chị gạch dưới chữ sai rồi viết lại giùm em are you have fun?...................... why dont you coming back tomorrow?................................ my bed is more expensiver than your bed?........................ anh chị giúp em , em cần gấp em hứa vote 5 sao