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Q.

The average translational kinetic energy of 10 gram H2 at 27 °C is

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a

18750 J 

b

12450 J

c

37250 J

d

3737 J

answer is B.

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Detailed Solution

Average translational kinetic energy of a gas is given as
KE=32nRT, where n is number of moles of gas, R is universal gas constant and T is absolute temperature of gas.
KE=32×5×253×300JKE=18750J
Hence, average translational kinetic energy of gas is 18750 J.

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