Which of the followowing does paper burn in?A.CO2 B.N2 C.O2 D.H2意思好象是：什么物质～＾％＆在％＄＾％燃烧

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Which of the followowing does paper burn in?A.CO2 B.N2 C.O2 D.H2意思好象是：什么物质～＾％＆在％＄＾％燃烧

Which of the followowing does paper burn in?A.CO2 B.N2 C.O2 D.H2意思好象是：什么物质～＾％＆在％＄＾％燃烧
Which of the followowing does paper burn in?A.CO2 B.N2 C.O2 D.H2
意思好象是：什么物质～＾％＆在％＄＾％燃烧

Which of the followowing does paper burn in?A.CO2 B.N2 C.O2 D.H2意思好象是：什么物质～＾％＆在％＄＾％燃烧
A不可能,应为它不能燃烧也不支持燃烧
B也不可能,因为它不支持燃烧
D同理
所以只有选C,C即支持燃烧也能燃烧

C. O2 氧气

纸在下面哪种气体里能燃烧。
二氧化碳
氮气
氧气
氢气

纸燃烧后的产物是什麼？
选C

C

纸能下面哪一个中燃烧？
C.O2 氧气。

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