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Calculate the average molecular kinetic ...

Calculate the average molecular kinetic energy :
(a) per kilomole,
(b) per kilogram, of oxygen at `27^@C`. ( R = 8320 J/K mole K, Avogadro's number `=6*03xx10^(26)` molecules/K mole )

Text Solution

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(a) Average molecular K.E. Per kilomole at `27^@C`
`K.E. = 3/2"RT"`
`= 3/2xx8320xx300`
`=3.744xx10^(6)"J"`
(b) Average molecular E.K. per kilogram
`=("K.E. per mole")/M`
`= (3.744xx10^(6))/(32)`
`=1.17xx10^(5)J`
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