For an ideal gas, kB = PV/(NT), where N is the number of molecules. Which option gives the approximate value of the Boltzmann constant kB?

Explanation

For an ideal gas, PV = N kB T, where N is the number of molecules. The Boltzmann constant is exactly 1.380649 × 10⁻²³ J/K in the SI, approximately 1.38 × 10⁻²³ J/K to three significant figures. Both N and T are in the denominator of PV/(NT).