user-avatar
tangbanglactroi@gmail.com
2 năm trước
1/ Tính hoá trị của: a) Nguyên tố Fe trong hợp chất FeCl2, biết clo có hóa trị I b) Nguyên tố Mg trong hợp chất Mg3(PO4)2, biết nhóm PO4 có hóa trị III. 2/ Viết công thức hóa học và tính phân tử khối của hợp chất tạo bởi Fe (III) và (SO4) (II). Nhanh!! Cần gấp Phải làm đúng!!!
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

10. Study hard or you can’t pass the final exam. -> If ...................... ………………………………………………………………………………… 11. I have a lot of students, so I can’t remember all their names. -> I have so ............................................................................................................................................. 12. Because Nam is very intelligent, he can pass the exam easily. -> Nam is ............................................................................................................................................... 13. The street children are very poor, so they don’t have enough food to eat. -> The street children are so ...................................................................................................................... 14. Lan is too young to decide for herself. -> Lan is so ............................................................................................................................................ 15. She is on a diet, but she ated the chocolate cake. -> Though .................................................................................................................................................... 16. In spite of the bad weather, we’re going to have a picnic. -> THough .................................................................................................................................................. 17. Despite his bad grades, he’ll be admitted to the school. -> Although ................................................................................................................................................ 18. We enjoyed our holiday despite the rain. -> Although .............................................................................................................................................. 19. I kept smiling in spite of not understanding a word. -> Although ............................................................................................................................................... 20. She disliked coffee. She drank it to keep herself warm. -> Though ............................................................................................................................................... 21. We took many pictures. The sky was cloudy. -> Although ............................................................................................................................................... 22. Nancy was sad after losing the contest, but she managed to smile. -> Even though ........................................................................................................................................ 23. She told interesting stories to her son. She had a poor memory. -> Despite ................................................................................................................................................. 24. He always drives carefully. He doesn’t want to cause accidents -> He always drives carefully in order ....................................................................................................... 25. Because of having a lot of difficulties, she mangaged to sell the house. -> As ………………………………………………………………………………………………….. 26. Peter has a bad cold, so he is in bed now. -> Because …………………………………………………………………………………………….. 27. The beach is so dirty that no one can swim in it. -> It ..................................................................................................................................................... 28. It was raining, so we decided to postpone our camping -> Since ……………………………………………………………………………………………… 29. She couldn’t come to class because of her illness. -> As …………………………………………………………………………………………………. 30. She isn’t old enough to decide for herself -> She is so ..................................................................................................................................

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