Since the gas it is getting compressed with a change on temperature, we consider that the pressure is constant, and of course the number of mole is constant (same gas), therefore, from the ideal gas law P V = n R T we can say: V T = constant Therefore, V 1 T 1 = V 2 T 2 ⇒ T 1 = V 1 × T 2 V 2 ⇒ T 1 = 12 L × 300 K 8 L = 450 K A=450k
