1.

At what temperature the kinetic energy of a gas molecule is one-half of its value at 30^@C?

Answer»

Solution :`(K.E.) =3/2 KT`
At TWO different conditions ` ((KE)_1)/((KE)_2) = (T_1) /(T_2) , (1)/( 1//2)= ( 303)/(T_2)`
Temperature at which KINETIC energy is half =`(303)/(2)`
` = 151.5 K =- 121.5^@ C `


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