user-avatar
252399162730528
2 năm trước
viết phương trình hóa học của Đốt cháy phôi bào sắt trong không khí thu được hỗn hợp sản phẩm gồm 3 oxit của sắt là : FeO, Fe3O4 và Fe2O3. Hoà tan hỗn hợp 3 oxit đó trong dung dịch axit HCl.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

II / Circle the best option A, B, C, or D to complete the following sentences : 1. Our friends have lived in Ho Chi Minh city __________ 2002 A. for B. since C. in D. about 2. He prefers soccer ___________ tennis A. from B. than C. to D. or 3. This is the first time I _________ this film. A. am seeing B. saw C. see D. have seen 4. He __________ to his friend’s party when his parents asked him to go home. A. was going B. goes C. went D. has gone 5. There’s a strange man behind us. I think_______. A. we are followed B. we are being followed C. we are being following D. we are following 6. ________ you mind if I use your dictionary? A. Will B. Can C. Do D. Did III/ Use the words given in brackets to form a word that fits in the spaces: 1. Their children have quite _____________ characters. (difference) 2. He didn’t win the championship, so he felt very _____________ . (hope) 3. She is one of the greatest _______ to appear in this theater. (perform) 4. My house is on the top of a hill. It’s very ____ there in the fall. (wind) 5 It is ___________ to eat too much sugar and fatty food. (health) 6. Every day, there are two _________ from Da Nang to Ho Chi Minh city. (fly)

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