The rms speed of the molecules in 1.0g of hydrogen.?

The rms speed of the molecules in 1.0g of hydrogen gas is 1700m/s.

A. What is the total translational kinetic energy of the gas molecules?

B. What is the thermal energy of the gas?

C. 500J of work are done to compress the gas while, in the same process, 1700J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules?