Chủ đề:
Bài 22: Tính theo phương trình hóa họcCâu hỏi:
Đốt cháy hết 8,96 lít khí C2H6 cần dùng vừa V(l) Không khí (có chứa 20% O2, 80% N2)
a) Viết PTPƯ
b) Tìm V?
c) Tính VCO2 thu được ở đktc
d) Tính khối lượng nước thu được
Rewrite the sentences with the given words or beginning in such a way that their meanings remain unchanged.
1.Our boss is absolutely determined not to give us that pay rise. (INTENT)
-> Our boss ....... the pay rise.
2. The value of sterling has fallen considerably in the past week.
-> There .........
Rewrite the sentences with the given words or beginning in such a way that their meanings remain unchanged.
1. The arrived at their destination alive and kicking. (SOUND)
2. At this moment, I only have time to think about my university thesis. (PREOCCUPIED)
3. Do you have any idea about how Jack made enough money to buy his new house? (LIGHT)
-> Can you ..... Jack made enough money to buy his new house?
4. My salary is half what I would be in the job 1 was offered in January.
-> If .................