1. The problem statement, all variables and given/known data A monoatomic ideal gas is initially trapped in a 0.500L container at 298K and 100kPa. The sample is then allowed to expand to 1.00L and the temperature is increased to 373K. Determine change of the entropy (ΔS) 2. Relevant equations ΔS = ∫(T1 to T2) dqrev/T 3. The attempt at a solution Is the pressure constant?