Five Moles of an Ideal Gas Expands Isothermally at 100 $\degree$

Multiple Choice

Five moles of an ideal gas expands isothermally at 100 $\degree$ C to five times its initial volume. Find the heat flow into the system.

A) 2.5* 104 J
B) 1.1 * 104 J
C) 6.7 * 103 J
D) 2.9 *103 J
E) 7.0 * 102 J