15.25: A gas undergoes the unusu7;v+*zabs orj5rbfj.1 (ch gtal 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 gj s5y,(mwq +kqas feels cool. This is qq(+msjkw5 ,y because

  94.35: A gas can be taken from stater5-k bn-g zhz7 a to c by two different reversible processes, a→c or a→b→c. During tz- zk -5ngr7hbhe 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 process 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 Vold 8ao4nuperj2q+ b1 6 tc(g)trume graph shown, in the process of going from a to b 60 J of heat are added, and in the process of going from b to d 20 J of heat are added. In the process of going a to c to d, what is the total r og qat+j682rcdtu1 b()nep 4heat added?

  96.22: When an ideal gas is isothermally compressedus9dzaw1 59o7u8u)n5kw cj0iv (9zroc k9gx u:

  97.15: Which of the following is always true for an isothermafv9/yp 8ys*usx7p ;u ; .ichaal process of an ideal gas78auip* 9pv;f yh./;cyax ssu?

  13.31: A monatomic ideal gas undergoes a reversible rr)njs5k.jp, * p+k g zr6 zz9hneax/ 9dy)d0wisothermal expansion in an encljarh +*/0e)dnrgz pzzs5jw r yk9k,p9.nxd)6osed container. Which one of the following quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric expansion followed by an isochoribbu6gd.a 5 c)ac cooling6 abug )bca.5d. Which of the following statements must be true after the completion of these processes?

  11.44: One mole of a monatomic ide3blhzlfz/ y(t/d .)rg al gas undergoes an isobaric expansion. In the process, the temperature of the gas increases from 300 K to 500 K. Which one of the following choices best represents the amount of work done by the gas on t /f g yzlzhdb(r/.3l)the surroundings?

  14.46: A monatomic, ideal gas undergoes an isoba*l :xn sa97m8:sz,ij f3elkj vric process. During the process, the gas performs 80 joules of work on the surroundings. Which one of thela*lne8:mzfikjv3 sx:,7s j9 following statements best describes the heat exchange during this process?

  07.40: Which is not true of an isochoric process on an enclosed ideal 0uy: t ru7 up1h.lyyrs(6/dfq gas in which the pressure decre6 7y/u0r lu uyhtsf.r1p(dq:yases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible ap2kw;b-0dzhiop)ej shqfc 22 h 2*h5kdiabatic process. The pressure and volume initially are given as P = 2.0 atm and V = 30 L. If the volume is hapbj 2zk -fq ph;25keh os)ih202c*wdhlved during the adiabatic process, how much work was done on the gas sample by the surroundings?

  03.48: Two completely identical samples of tgjc2hq.iu7 b7 he same ideal gas are in equal volume containers with the same pressure and temperature in containers labeled A and B. After the processes are performed on hu 7c27ji. qbgthe gases in containers 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 drw(h; erm9x 7shows four different possible reversible processes performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Process C is adiabatic. Pwrhedr; m( 7x9rocess 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, and T for an ideal gas, which one of the foll8idsdsq/ /aqkh6y 2wt 0fq79aowing reversible processes has the mo/ dhqy2k0i9s 7 q6tfaa8w/dsq st heat associated with it?

  04.45: Container A has a sampdbax.97( , t,dhh yw-niy k1hmle of monatomic ideal gas, while container B has a sample of diatomic ideal gas. The two gases start,ah79-w 1, kh nmdyybht.(xid with the same initial temperature, volume, pressure, and number of moles of molecules. Each gas now undergoes a reversible 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 idrf2,p7 byt 8gieal gas has pressure P , volume V , and temperature T . Which of the following processes would result in the greatest amount f2bg8yt ir7 ,pof energy added to the gas from heat?

  13.48: Two identical samples of a monatomic ideal gas are to undergo reversibso j a ,lj,2j8azeb o93h8mzl5le processes. Which one of the following choices is a corre,lz5jsj39azb2 o8e ,hmajl 8oct statement about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling