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    | • | There are several
    basic hypotheses that are 
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    |  | used to explain
    the behavior of gases. 
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    | • | 1.Volume occupied
    by gas molecules 
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    |  | themselves is
    negligible compared to the 
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    |  | total volume
    occupied by the gas itself. 
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    |  | (Gas molecules
    are though of as point 
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    |  | 
   
    |  | masses: have mass
    but occupy no volume.) 
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