The number of molecules per unit volume in the sample is 20. The mass of each molecule is 10^-20kg. The mean of speed squared is 4m^2/s^2. What is the value of internal energy of the gas? Assume volume of container is 0.02m^3.(a) 0.8*10^-20J(b) 0.53*10^-20J(c) 0.01*10^-20J(d) 0.45*10^-20JThe question was posed to me during an interview for a job.This interesting question is from Kinetic Theory of an Ideal Gas in portion Kinetic Theory of Physics – Class 11

The number of molecules per unit volume in the sample is 20. The mass

1.	The number of molecules per unit volume in the sample is 20. The mass of each molecule is 10^-20kg. The mean of speed squared is 4m^2/s^2. What is the value of internal energy of the gas? Assume volume of container is 0.02m^3.(a) 0.810^-20J(b) 0.5310^-20J(c) 0.0110^-20J(d) 0.4510^-20JThe question was posed to me during an interview for a job.This interesting question is from Kinetic Theory of an Ideal Gas in portion Kinetic Theory of Physics – Class 11
Answer» Correct ANSWER is (a) 0.810^-20J The explanation: INTERNAL ENERGY is given by: E = (1/2)Nmv^2, where N is the total NUMBER of molecules = nV. E = 0.5200.0210^-204 = 0.810^-20J.

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