The difference between Cp and Cv is equal toA) Planck’s constantB) Gravitational constantC) Boltzman constantD) Universal Gas constant

The difference between Cp (heat capacity at constant pressure) and Cv (heat capacity at constant volume) for an ideal gas is equal to D) Universal Gas constant.

Here's a step-by-step explanation:

1. Cp and Cv are specific heat capacities for gases. Cp is the heat capacity at constant pressure, and Cv is the heat capacity at constant volume.

2. For an ideal gas, the difference between Cp and Cv is equal to the gas constant R. This is derived from the Mayer's relation, which states that Cp - Cv = R.

3. Therefore, the correct answer is D) Universal Gas constant.

The other options (Planck’s constant, Gravitational constant, Boltzman constant) are unrelated to the difference between Cp and Cv.