A CH4 (9) sample is kept in a vessel at 52 C. a) Calculate the average translational kinetic energy of a single CH4 (g) molecule, in J. (Show your calculations. You cannot get any score if you write the answer only, even if it is correct.) b) Calculate the root-mean-square speed of CH4 (9) molecules, in m/s. (Show your calculations. You cannot get any score if you write the answer only, even if it is correct.) c) Without making calculations, state whether the average translational kinetic energy of C2H4 (9) molecules at 52 C is less than, greater than, or equal to that of CH4 (g) molecules. Explain your answer. d) Without making calculations, state whether the root-mean-square speed of C2H4 (g) molecules at 52 C is less than, greater than or equal to that of CH4 (g) molecules. Explain your