At $305$ K$,4$ mole of N$2$ stored in a $25$ liter compartment of a container and $1$ mole of O$2$ is stored in another $25$ liter compartment of the same, container. When the separation is removed to mixed the two gases ideally together and make a total of $50$ liter gas mixture.

Please calculate the change of enthalpy, entropy, and Gibbs free energy.