user-avatar
Ducdhlq1
2 năm trước
Bài 6: Hợp chất có CTHH là XO2. Bt rằng khối lượng của 5,6 lít khí này (ở đktc) có khối lượng là 16g. Xác định CTHH của khí đó. Bài 6: Cân bằng pt hóa học sau FexOy+H2----->Fe3O4+H2O Bài 7: Trong CTHH sau công thức nào đúng? công thức nào sai? sửa lại cho đúng: K2o, CaCl2, MgSO4, NaCl2, Na(OH)2, Ag2O3, AlCl2.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

1 In some countries,school children____learn two languages at school nowadays A have to B had to C should D should have 2______television is also a means of learning English A Watch B Watching C Being watch D Watched 3 He devoted most of his free time _____the poor A to help B helping C to helping D for helping 4 They told their parents that they____their best to do the test A try B will try C would try D had tried 5 He told the story as if he_____everything A knew B was knowing C has been working D had known 6 If her mother__home early,she can cook the meal for the family A comes B come C came D had come 7 If the teacher _____us some homework ,we have to say at home and do it Agive B gives C will give D gave 8 All the homework______at home A should home B should be done C should make D should be made 9 Lan enjoys watching television after dinner._____? A does she b does not she C did she D did not she

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