A pure 4 -mole sample of a newly discovered monatomic ideal gas is sitting in a…

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

41. A pure 4 -mole sample of a newly discovered monatomic ideal gas is sitting in a container at equilibrium in a `

20.0^{\circ} \mathrm{C}

` environment. According to the kinetic theory of gases, what is the average kinetic energy per molecule for this gas? (A) `

4.14 \times 10^{-22} \mathrm{~J}

` (B) `

2.02 \times 10^{-21} \mathrm{~J}

` (C) `

6.07 \times 10^{-21} \mathrm{~J}

` (D) The molar mass of the gas is needed to answer this question.