Bài 4: nhiệt phân 15,8 gam thuốc tím thì thu được bao nhiêu lít khí oxi ở đktc. để có lượng oxi này thì cần V không khí bằng bao nhiều Giúp vs ạ vote 5 sao nha

Vẽ mầm chỉ là phụ thôi (Việc chính tôi muốn các bạn an ủi bạn này bị bạch.... Chỉ sống vỏn vẻn 4 năm nx) Link ở câu hỏi chi tiết

ai trả lời đc mik cho ctlhn lun

giúp mình với câu cuối nha gấp gấp

Kể tên các tổ chức hòa bình trên Thế giới

VII. Read the passage and choose the correct answer. Nam’s grandparents live in a nice, small house in the countryside. There isn’t a school, a bookshop, a hotel, a hospital, a restaurant near it but there is a long river. There is a rice paddy behind the house. There is a rice paddy in front of it, too. To the left of the house is a small market. To the right of the house is a big garden. His grandparents grow a lot of vegetables and flowers in the garden. He loves them and their house very much. It is quiet and peaceful. He visits it every summer. 1. Near Nam’s grandparents’ house, there is ___________________ a. A school b. a bookshop c. a restaurant d. a long river 2. What is behind the house? a. A big garden b. a rice paddy c. a long river d. a small market 3. Is there a rice paddy in front of the house? a. No, there’s b. No, there isn’t c. yes, there is d. yes, there is a 4. What’s is to the right of the house? a. A big garden b. a rice paddy c. a long river d. a small market 5. Why does he visit the house every summer? – Because ___________________ a. He loves that house c. his parents live in that house b. he doesn’t like his house d. he loves his grandparents and that house

Một dung dịch có pH=1,5. Tính [H+] và [OH-] của dung dịch. Giải thích chi tiết giùm mình

Tính chất của cuộc cách mạng tháng Tám(Nêu trên 2 tính chất)

I. Choose the correct word A,B,C, or D to fill each blank in the following conversation. Minh : Hi, Hoang. ______(1)________? Hoang : Hi, Minh. I’m fine. And you? Fine, thanks. ______(2)________ now? Hoang : I live at 16 Nguyen Van Cu Street. Minh : ______(3)________ near your school? Hoang : Yes, it is. So I often walk to school. How about you? Where do you live? Minh : At 35 Tran Phu Street. Hoang : Where ______(4)________ now? Minh : I’m going to the market to buy some food. Hoang : Oh, it’s 1.45. My class usually _____ (5)_________ at 2. I must go to school now. See you again later. Bye! Minh : Bye. 1. A. How old are you B. How are you C. Where are you D. What are you 2. A. What do you do B. Where do you live C. Where you live D. Where are you living 3. A. Is it B. It does C. It is D. Is its 4. A. are you going B. do you go C. you are going D. you go A. is starting B. start C. starting D. starts

giải giup em voi ạ 😶😶😶😶😶😶