一道英文化学简答题1:Explain how a gas exerts pressure on a surface?please answer in english.2:Give an example of something that might use this property that liquid is dificult to be simpress.

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一道英文化学简答题1:Explainhowagasexertspressureonasurface?pleaseanswerinenglish.2:Giveanexampleofsomethingth

一道英文化学简答题1:Explain how a gas exerts pressure on a surface?please answer in english.2:Give an example of something that might use this property that liquid is dificult to be simpress.
一道英文化学简答题
1:Explain how a gas exerts pressure on a surface?
please answer in english.
2:Give an example of something that might use this property that liquid is dificult to be simpress.

一道英文化学简答题1:Explain how a gas exerts pressure on a surface?please answer in english.2:Give an example of something that might use this property that liquid is dificult to be simpress.
1st.A constant beating on the surface of a container by moleculars shows the macroscopical pressure.Though the kenitic energy and the momentum of a single molecular are tenuity,vast amount of moleculars perform a macroscopical property which can hardly be ignored.
2nd.i don`t quite understant the word 'simpress'.

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