user-avatar
Trang170520
2 năm trước
Nêu hiện tượng, giải thích và viết phương trình hoá học xảy ra khi thực hiện các thí nghiệm sau: a) Cho kẽm tác dụng với dung dịch axit clohiđric HCL. b) Dẫn hiđro qua bột đồng (II) oxit CuO, đun nóng
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Choose the best options to complete the following sentences. 1. He started his __________ when he was 20 years old. A. Congratulation B. athlete C. career D. achievement. 2. Tiger Woods is __________ as one of the most famous golf players. A. regarded B. looked C. become D. thought. 3. _________________! You've passed the exam. A. Thank you B. Never mind C. Congratulations D. You're welcome 4. She was totally____________after finishing her performance. A. exhausted B. fantastic C. exciting D. stressful 5. Doing morning exercise keeps us _____________ every day. A. tired B. fat C. fit D. bored 6. They have joined many activities like sailing, cycling, fishing and football. They are very ___________. A. sporty B. strange C. crazy D. helpless 7. Many football competitions are held at My Dinh ________________. A. Square B. House C. Building D. Stadium 8. Don't forget to bring your ___________to climb a mountain. A. bat B. sport shoes C. sandals D. goggles 9. The children are playing blind man's bluff in the _____________. A. court B. pool C. playground D. roof 10. France was____________ to hold the UEFA Euro 2016. A. elected B. spent C. brought D. thought

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