9.Which of the following gas(es) can be collected with a tank of water in experiments ?
(1)Methane
(2)Nitrogen oxide
(3)Nitrogen dioxide
A.(1) only
B.(1) and (2) only
C.(2) and (3) only
D.(1), (2) and (3)
nitrogen oxide 即係指所有有Natom 的oxide?
點解許呢條題目,nitrogen oxide 可以
collected with a tank of water in experiments ?
ans:B
2007-02-18 08:24:11 · 3 個解答 · 發問者 2003 2 in 科學 ➔ 化學
我知NO2係soluble...
答非所問....
2007-02-18 11:15:09 · update #1
同density有咩關係....
2007-02-22 09:39:05 · update #2
Nitrogen oxide is another name of nitrogen monoxide (NO). Its meaning is entirely different from 「oxides of nitrogen」.
Both methane (CH4) and nitrogen oxide (NO) are insoluble of water, so that they can be collected over water.
2007-02-18 14:46:55 · answer #1 · answered by Uncle Michael 7 · 0⤊ 0⤋
因為methane同nitrogen oxide都係less denser than air
但係nitrogen dioxide就係denser than air
2007-02-19 13:48:37 · answer #2 · answered by ? 2 · 0⤊ 0⤋
因為NO2係soluble in water so 唔可以用collected over water
equation:
2NO2+H2O→HNO2+HNO3
2007-02-18 09:07:39 · answer #3 · answered by ? 1 · 0⤊ 0⤋