Before revision: The ideal gas law may be written for both cases, and the amount of air in each case is equal: where N is the number of molecules of gas (equal in both cases), k is Boltzmann's Constant and T is the temperature in Kelvin .
After revision: The ideal gas law may be written for both cases, and the amount of air in each case is equal: where N is the number of molecules of gas (equal in both cases), k is the Boltzmann constant and T is the temperature .