user-avatar
khai2018
2 năm trước
giải giùm mình đi làm ơn Bài 1: Cặp chất nào sau đây xảy ra phản ứng hóa học: a. Flo và hiđro b. Clo và oxi c. Lưu huỳnh và hiđro d. Đồng và clo e. Cacbon oxit và nước g. Magie và lưu huỳnh Bài 2: Hãy chọn các hóa chất sau: HCl, CO2, CO, Cl2, H2O điền vào chỗ trống thích hợp và hoàn thành phương trình phản ứng sau: a. MnO2 + ….. MnCl2 + ….. + H2O b. Mg + ….. MgO + C c. Fe3O4 + ….. Fe + ….. d. CaCO3 + ….. CaCl2 + ….. + H2O e. NaOH + …… NaCl + ….. + H2O g. NaOH + …... NaCl + NaClO + …..
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

F. CORRECTION I. Choose the underlined word or phrase (A, B, C or D) that needs correcting. 1. If a drop of oil is placed in a glass of water, it would float to the top. A B C D 2. The Tuoi Tre is a daily newspaper that is wide read by both teenagers and adults. A B C D 3. My parents wouldn’t let me staying up late when I was a child. A B C D 4. Her children are used to picking up after school every day. They don’t have to walk home. A B C D 5. I’m usually right about the weather, amn’t I? A B C D 6. Could I change seats with you? I’d like sitting next to my friends. A B C D 7. Watch television to the exclusion of all other activities is not a healthy habit for a growing child. A B C D 8. Hans is only fourteen, but he seems enough old to stay out until ten. A B C D 9. I think that’s an interesting thought, isn’t that? A B C D 10. Greeting enough sleep is important in order not fall asleep is class. A B C D 1. The bad weather didn’t make my flight be delayed, but the terrorism does. A B C D 12. Kevin had took home lots of nice souvenirs last time, so he didn’t buy anymore. A B C D 13. A tour guide was showing the tourists around when a something fell down from the sky. A B C D 14. If you decide to start the trip, you must reserve a seat in advance on planes or trains. A B C D 15. I bet you will never have the nerve to start an expedition to an Amazon rainforest. A B C D 16. My trip to the countryside was fantastic. The locals were extremely welcome. A B C D 17. Did you have a chance to do any sightsee? A B C D 18. I find it absolutely astonished that you didn’t like Paris. A B C D 19. You’re a third person to ask me about the trip. A B C D 20. When he was ten, he taught himself to play a violin. A B C D

Ex 1. Put the verbs in brackets into the correct form of conditional sentence type 1. 1. If people (pollute) the environment, a lot of animals (die) . 2.If water (consist) germs, people (get) ill. 3 . If the poles (melt) , huge landmasses (be) under water. 4. Many precious animals (disappear) , if people (cut down) trees. 5. If nuclear waste (throw) away, it (be) very dangerous. 6. If the emission of CO2 (continue) at high rate, the climate (destroy) . 7. We (save) the trees If we (save) paper. 8. If schools (teach) about environmental problems, All students (know) how to protect the environment. 9. If more people (travel) by bike or bus, we (not have) traffic jam. 10. If the government (fine) heavily to the factories, they (not dump) sewage into the ocean. Ex 2. Put the verbs in brackets into the correct form of conditional sentence type 2. 1. If I (be) the president, I (pass) harder regulations for using fertilizers in agriculture. 2. If I (be) you, I (not eat) that genetically modified potatoes. 3. If big corporations (care) more about the environment and less about their own pockets, the pollution from factories (not increase) so fast. 4. He (sort) his trash, if he (be) smart. 5. If the seas (pollute) , maybe the population of whales (recover) . 6. If I (not throw) this can of Coke into the bushes, I (not know) that Coke is poison for wild animals. 7. If the factories (not dump) untreated waste into the ocean, fish (die) massively. 8. What (do) you if you (be) President. 9. If the air (not be) dirty, the breathing problems (reduce) . 10. If I (own) a lonely island, I (build) a huge house by the beach.

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