What is the internal energy of 1 mole of helium at 127 degrees?

U = (i / 2) VRT, where i is the degree of freedom (3, 5, 7), U (J) is the internal energy, V (nu (* V with a tail at the top)) (mol) is the number of wa, R is the gas constant, which is 8.31 J / (K mol), and T (K) is the temperature
Given: He
V = 1 mol
T = 127C
R = 8.314 J / (K mol)
SI: T = 127 + 273 = 400K
Decision
U = (3/2) * 1 mol * 8.31 J / (K mol) * 400K = 4986J
Answer: 4986J