Problem 5.37 Part A A gas is confined to a cylinder under constant atmospheric p
ID: 697694 • Letter: P
Question
Problem 5.37 Part A A gas is confined to a cylinder under constant atmospheric pressure, as illustrated in the following figure. When the gas undergoes a particular chemical reaction, it absorbs 829 J of heat from its surroundings and has 0.64 kJ of P- Vwork done What is the value of H for this process? Express your answer with the appropriate units. on it by its surroundings Figure 1) AH- 829 k.J Submit My Answers Give Up Incorrect; Try Again; 3 attempts remaining Part B What is the value of E for this process? Express your answer with the appropriate units. ure 1 of 1 AE 1469.J tnergy can entor or k.J n work done on piton Submit My Answer GiveUR Matter oan not enter or leave system Incorrect: Try Again: 4 attempts remaining Surmundings linde Pston, and everythingg teyondExplanation / Answer
From first law of thermodynamics,
change in internal energy(DU) = q + w
= 829 + (-0.64*1000)
= 189 joule
= 0.189 kj
change in enthaly(DH) = DU+PDV
= 0.189 +0.64
= 0.829 kj