A gas expands as shown in the graph.If the heat taken in during this process is 1.02 * 10⁶ J and 1 atm = 1.01 * 10⁵ N/m²,the change in internal energy of the gas (in J)is

Question

Quizplus · Accepted Answer

The change in internal energy of the gas is equal to the heat added to the gas minus the work done by the gas. From the graph, the work done by the gas is approximately (1.01 N/m^2)*(0.011 m^3) = 1.111×10^-2 J. Therefore, ΔU = 1.02×10^16 J - 1.111×10^-2 J = 1.40×10^16 J. Choice B is the closest to this value.

A Gas Expands as Shown in the Graph