The Ideal Gas Law tells us that PV = nRT, and that's where most students would start with this question. However, it's important to recognize that in this scenario the pressure (P), number of moles of gas (n), and gas constant (R) won't change between the initial state and the final state of the gas. As a result, you actually want to use Charles' Law, which is a simplified version of IGL that states that V1/T1 = V2/T2.
Rearranging the equation algebraically, you'll find that V2 = V1T2/T1. Recall that in these calculations your temperature values should be in Kelvin, so V2 = (2.03 L) * (50 + 273) / (25 + 273). That should lead to a final answer of 2.20 L for the final volume of the gas. Hope that helps!
