In this problem we will learn how to calculate the entropy change for an irreversible adiabatic expansion of an ideal gas. for a reversible adiabatic expansion of an ideal monatomic gas from a state (p1,v1,t1) to a state (p2,v2,t2) the relationship between the initial and final state variables is t2∗v2/32=t1∗v2/31 or equivalently p1∗v5/31=p2∗v5/32

suppose 5.15 moles of an ideal monatomic gas expands reversibly and adiabatically from an initial volume of v 20.0 l. calculate initial temperature of t and volume v2 and give your answer in si units.