Help with A P E X for class please?

What is the internal energy of 4.00 mol of diatomic nitrogen gas n2 at 455k

An asteroid is discovered in a nearly circular orbit around the sun, with an orbital radius that is 2.47 times earth's. what is the asteroid's orbital period, its "year," in terms of earth years?

The discovery of the electron as a subatomic particle was a result of