The expansion of 2.0 moles of a monatomic ideal gas from stateA to state B is PA = PB = 600N/m2 and VA = 3.0m3 ,VB = 9.0m3. (a) i. Calculate the work doneby the gas as it expands ii. Calcuate the change ininternal energy as it expands iii. Claculate the heatadded to or removed from the gas during the expansion The expansion of 2.0 moles of a monatomic ideal gas from stateA to state B is PA = PB = 600N/m2 and VA = 3.0m3 ,VB = 9.0m3. (a) i. Calculate the work doneby the gas as it expands ii. Calcuate the change ininternal energy as it expands iii. Claculate the heatadded to or removed from the gas during the expansion
Explanation / Answer
i. work = pressure * change in volume = 600 * (9-3) = 3600 Joules . ii. change in internal energy = (3/2) n R T = (3/2) p V = (3/2) * 600 * 6 = 5400 Joules . iii heat added = work done +change in internal energy = 3600 + 5400 = 9000Joules