Đốt cháy hoàn toàn 5,4 gam Al trong lọ đựng khí O2

a) Trong thể tích khí O2 (đktc) cần dung

b) Tính khối lượng nhôm oxit thu được

c) Để có khối lượng oxi trong lọ trên cần nhiệt phân bao nhiêu gam KMnO4

Use the correct form of words in brackets.

1. There is still room for your (improve) ………………………in your work.

2. Today scientific progress is mostly defined in terms of (technology)…………………advancements.

3. The first experience was (succeed)………………………, so we need to do another one.

4. (Research)………………………in Japan have found that human ageing may be able to be delayed or even reserved.

5. The US (explore) ………………………of the Moon began with the Ranger 4 impactor in 1962.

6. Thousands of (chemistry) ………are used in everyday products –in our water, our food and in the air we breathe.