Tìm lỗi sai

1. I am writing for you about my decision

2. They use twice as many electricity as we do

3. When you came, I was looked after my younger sister

4. She will pay less but she uses two energy-saving bulbs

5. We should make some posters ang hang it around our school

6. I's raining. However, I can't go to school on time

7. It will be nice to see you again at the party. I'm looking forward to see you

8. There are too much exhaust fume in the air

9. I told a joke, and nobody laughed

10. Nam got wet so he forgot his umbrella

11. Who looks up the baby when you are away from home?

12. We do not have much paper now, therefore we should try to save them

Cho 6,71 lít hỗn hợp metam và etilen đi qua 1 lít dung dịch Brom 0,1M

a) Viết phương trình phản ứng xảy ra

b) tính thành phần% về thể tích của mỗi khí trong hỗn hợp ban đầu