An ideal gas is held at a constant temperature of 410 K as it expands slowly from a volume of 0.40 m^3 to 4.1 m^3. As the gas expands, it does 260 J of work. What is the change in the internal energy ΔU of the gas during this process?
ΔU = _____ J
How much heat Q is absorbed by the gas as it expands?
Q = ______ J