user-avatar
tanthuyhoang2k2
2 năm trước
I, BÀI TOÁN HỖN HỢP 2 KHÍ Dẫn 8,96 lít hỗn hợp gồm CH4 và C2H4 qua dd Br2 10% phản ứng vừa đủ thì thu được 11,28g C2H4Br2. a) Viết PTHH b) Tính thành phần % về thể tích mỗi khí trong hỗn hợp ban đầu. c) Tính khối lượng dd Br2 10% cần dùng? Các khí đo ở đktc.
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Topic 3: envirinmental problem 1. What is the environmental problem in your neighbourhood? 2. Is it serious? 3. What are the effects of the problem to people? 4. What do you can do to reduce that problem? Now there are many problems of environmental pollution such as water pollution, air pollution, soil pollution, noise pollution and deforestation but I think the most serious problem is rubbish. The rubbish is not good for health and environment. We should reduce the rubbish in the activities daily. Firstly, we need to reuse bottles of milk, juice… Secondly, we can recycle the cans to make school things. We also recycle the paper boards to make useful things. Thirdly, we open a book festival. We swap books, stories, magazines, newspapers with each other. Finally, we use the reusable things such as: paper bags, reusable bags. So we do not need use plastic bags. So we can protect the environment with some little actions. I think people can do it to have a better life. . Topic 4: TV programme 1. What is your favourite TV programme? 2. Is it interesting? 3. What channel is it on? 4. What is it about? 5. How often do you watch it? My favorite TV program is Hello Jadoo - a famous program. I like this program because it is very funny and entertaining. It's on HTV7 Channel at 5pm from Tuesday to Saturday every week. I always watch it . This program is about a cute girl, funny and intelligent but quite lazy and friends good-hearted, genial of jadoo. Through cartoon, I developed communication skills, perseverance and life skills. I wish cartoon will premiere viewers or more episodes and more meaningful. . Topic 5: favorite technology Smart watches Today, smartwatches are becoming more popular in the digital world. The first digital watch was invented in 1972 with the ability to store 24 digits and equipped with user-programmable memory. However, the latest smartwatches have many different functions that users can enjoy. First, they can connect to your phones from afar so you can send messages and access emails. During your flights, you can easily reply to your messages. Next, these smartwatches can help you update information like news and weather conditions. It is amazing that you can play music, go shopping online or book a flight with these small devices. In addition, you can also change the colour of watchbands to match with your clothes or suite your tastes.

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