user-avatar
NghiemNguyen77
2 năm trước
cho 16,8 gam bột sắt tác dụng vừa đủ với khí oxi tạo ra oxit sắt từ fe3o4 tính khối lượng của oxit sắt từ tạo thành
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

VII. COMPLETE THE SENTENCES WITH THE CORRECT FROM OF THE VERBS (PRESEN SIMPLE , PRESENT CONTINUOUS, OR PRESENT PERFECT) 1......................(you/talk) about the upcoming journey? Can I join? 2.Recently , the United States .............. (Alter) the whole of their immigration laws 3.Either kangaroo or Sydney Opera House ............. (symbolize) Australia 4.Look at the London Eye ! The wheel ............. (appear) motionless, but it .............. (rotate) slowly 5.Look! The concert ........... (start) at 7 p.m and .......... (end) at 9p.m 6. Canada.............. (provide) fish, furs, and other natural resources to the world since the 15th century 7. We vé already booked our holiday. We........... (Go) to Scotland in July 8.About 375 million people .............. (Speak) English as their first language. 9. To preserve natural habitat , the government .......... (Establish) six national parks so far 10 . Excuse me , what time ............ (The last train to Dublin/leave)? 11.I .......... (Live) tn the UK at the moment to learn English 12 . English ............ (Be) an official language un several African countries , such as Liberia , Nigaeria , and South Africa 13. ............. (You/ever/be) to Singapore ? -Yes, I ............. (Be ) there twice 14. Where ........... (You/go) on your holiday next summer? 15. Over 670 million people ............ (Visit) Disneyland since its opening in 1955 #GIÚP MK NHÉ MK ĐG CẦN GHẤP TRONG NGÀY HÔM NAY. CẢM ƠN RẤT NHÌU

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