Question

what is mayer's law?

Answer 1

It is the First Law of Thermodynamics. It is simply a way to convert from calories to joules and vice versa.

Answer 2

$\mathbb{Answer}$

Julius von Mayer derived a relation between specific heat at constant pressure and the specific heat at constant volume for an ideal gas. The relation is:

$\red{Cp - Cv = R}$