For the isobar, it is heating 400 mol per 500K gas, the amount of heat is 9.4 MJ. Determine the work

For the isobar, it is heating 400 mol per 500K gas, the amount of heat is 9.4 MJ. Determine the work of the gas and the increments of its internal energy.

Let’s write the formula for solving the equation:
A = p * ΔV = v * R * ΔT;
Substitute the values into the formula and calculate:
A = 400 * 8.31 * 500;
A = 1662000 J;
Let’s write a form for solving the problem:
Q = U + A;
Find U:
U = Q – A;
U = 9400000 – 1662000;
U = 7738000;
Answer: U = 7738000.