15.25: A gas undergoes the uo5 ye5 8*uqo. aevrrv;nusual process M $\to$ N in the pressure vs. volume graph shown. Which one of the following choices properly represents the signs of the internal energy change of the gas $\Delta$U, the total energy transferred as heat to the gas Q, and the total work done on the gas by the surroundings W, for this process?

  03.28: When gas escapes from a pressurized cylinder, the stream of 7 c8m /a9-hxpdrcxz2tgas feels cool. Thr-7xt9dchx2/p8 z mcais is because

  94.35: A gas can be taken from statewv ):i z77fs)-tokern a to c by two different reversible processes, a→c or a→b→c. During the direct process a→c, 20.0 J of work are done by the system and 30.0 J of heat are added to the system. During the proces) sei:wt7fzvo7n) -rks a→b→c, 25.0 J of heat are added to the system. How much work is done by the system during a→b→c?

  06.26: In the Pressure versus Volume graph shown, in the process of v w*a2ls,3zvc l*sn j2going from a to b 60 J of heat are added, and in the process of going from b tzs2nav*lw s l*c2 j,3vo d 20 J of heat are added. In the process of going a to c to d, what is the total heat added?

  96.22: When an ideal gasbw g:rwg-t-5z+g7hu 0gisd ;e is isothermally compressed:

  97.15: Which of the following is always true for an isotxl69 /-vzj zgwhermal process of an ideal gas9gv- /6jlxwzz?

  13.31: A monatomic ideal gas undergoes a reversible isotherma3i)fb 0rt7(nd ut /psxf/lroby5g/x.l expansion in an enclosed container. Which onet g)b 0 p/o57(fdirb/sytl. 3ufxnx/r of the following quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an iss ,2l/pcuie 4yw 92kljobaric expansion followed by an isochoric cooling. Which of the following statements must be true after the completion of these procsil pw ,c9euyk4l2j2 /esses?

  11.44: One mole of a monatom;)/ i kpvxq4wxkhq3)uic ideal gas undergoes an isobaric expansion. In the process, the temperature of the u) 4x/xh)q; i pwvkkq3gas increases from 300 K to 500 K. Which one of the following choices best represents the amount of work done by the gas on the surroundings?

  14.46: A monatomic, ideal gas 6o/-pt)wqx ydy f34 ucz1cg4j undergoes an isobaric process. During the process, the gas performs 80 joules of work on the1d3/ygj zc opwy64uxfc-tq 4 ) surroundings. Which one of the following statements best describes the heat exchange during this process?

  07.40: Which is not truektgj/.+fcwe zut58m7 of an isochoric process on an enclosed ideal gas in which the pz kewt7t.u+j5 g/ f8cmressure decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible adiabatic procesj7p va s -wm;q p*8unv5arf it;79efh5s. The pressure and volume initially are given as P = 2.0 atm and V = 30 L. If the pq7w;avh m5f5 pej7t ;9uvrai-s8 *fnvolume is halved during the adiabatic process, how much work was done on the gas sample by the surroundings?

  03.48: Two completely identical samples of the same ideal gas are in equal v4 v:r odehos02olume containers with the same pressure and temperature in containers labeled A and B. After the processes are performed on the gases in containers2h:e doos04 vr A and B, which is at the higher temperature?
The gas in container A performs non-zero work W on the surroundings during an isobaric (constant pressure) process before the pressure is reduced isochorically (constant volume) to 1/2 its initial amount.
The gas in container B has its pressure reduced isochorically (constant volume) to 1/2 its initial value and then the gas performs non-zero work W on the surroundings during an isobaric (constant pressure) process.

  05.38: The PV diagram shows four d16b y;mu ,bur.qrd2 wwifferent possible reversible processes performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Process C is adiab1 rd.wm2ywrq,u6bu b;atic. Process D is isochoric (constant volume). For which process(es) does the temperature of the gas decrease?

  16.48: From a given state of P, V, and6w ;w:w- q.;vgbhomt byp(-mw T for an ideal gas, which one of the following reversible processes has the most heat associated with i(tw-wp .mo wv:-m;b wg y;bhq6t?

  04.45: Container A has a sample of monatomic ideal gas, while container B 8:t n 6gu hg,ilsrh*n0has a sample of diatomic ideal gas. The two gases start with the same initial temperature, volume, pressure, and number of moles of molecules. Each gas now undergoes a re*:,0s h6n 8ug thlnrigversible adiabatic process that cuts the pressure in half. Which sample of gas is now at the higher temperature?

  08.44: A mole of a monatomic idealag 8njo9ti) 5li,fk3wqrue-tw 2 k-m 8 gas has pressure P , volume V , and temperature T . Which of the following processes would result in the greatest amount of energy added to tht9t- )ri,l8wfn5 8wmqjuki -2 egok3 ae gas from heat?

  13.48: Two identical samples of a monatomic ideal g )tle 7c55p6 0pnjtdgkas are to undergo reversible processes. Which one of the following choices is a correct statement about the heat associated wilge5j n750)6tdpct p kth the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling