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damcongson1582000
2 năm trước
Giúp e với ạ Câu 1: Cho 200ml dd HCL 0,4M phản ứng với 300ml dd 0,2M NaOH thủ được dd A. Tính nồng độ mol chất có dd A. Câu 2: Trộn 500ml dd HCL 0,12M với 500ml dd AgNO3 0,1M, sau phản ứng thu đc kết tủa A và dd B. a) Tính khối lượng kết tủa A b) Tính nồng độ mol chất có trong dd B
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I. Read the passage and choose the best answer (A, B or C) to each statement(2pts) Da Nang is one of the most peaceful cities in Viet Nam with a lot of beautiful beaches. This is a wonderful place for those who love seas and enjoy fresh air. Life here is not so busy as that in Ho Chi Minh City. It is not only a beautiful city but also a safe place to live in. Every evening, after work, you can easily catch the sight of families riding to the beach, leaving their motorbikes. They believe that their vehicles will still be there when they come back. There is no beggar here and the air is fresh. Another good thing is the food. If you love sea food, Da Nang will be the right choice. The food here is very fresh and the price is cheaper than that in Ho Chi Minh City. 1. Da Nang is a good place for sea lovers. A. Right B. Wrong C. Doesn‟t mention 2. The life in Da Nang is busier than that in Ho Chi Minh City. A. Right B. Wrong C. Doesn‟t mention 3. There are beautiful mountains in Da Nang. A. Right B. Wrong C. Doesn‟t mention 4. It is not expensive to buy seafood in Da Nang City. A. Right B. Wrong C. Doesn‟t mention 5. Da Nang is not only peaceful but also beautiful. A. Right B. Wrong C. Doesn‟t mention

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