14.The lungs float on water because
Answer:
a. the cells are very soft
b. it is made up of very tiny cells
c. it is made up of animal cells
d. the lungs are filled with air
15.Which of the following can be used to absorb carbon dioxide?
Answer:
a. sodium hydroxide
b. hydrogencarbonate indicator
c. sodium hydrogencarbonate
d. lime water
IS(2questions)
2007-12-31 7:03 am
回答 (4)
2007-12-31 7:24 am
✔ 最佳答案
2個都係dd
2008-01-09 19:30:45 補充：
人總會有錯嗎,,-33-''
...
2010-02-02 2:17 am
15 唔係B咩?
sodium hydrogencarbonate only release co2.
(Only be myself, so it may be wrong)
sodium hydrogencarbonate only release co2.
(Only be myself, so it may be wrong)
2008-11-12 4:14 am
15 should be (c). lime water is not for absorbing CO2 but is for testing the carbon dioxide.
(Maybe!)
(Maybe!)
2008-01-06 11:00 pm
really bad.
收錄日期: 2021-04-13 17:39:38
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