15.25: A gas undergoes the unun-fa d+p 3b) 7tucxso-sual 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 0 oj6 nbgf9t3gbjni u+.c hx+,stream of gas feels cool. Thi, gnh.b3ug9t6xjco + fb0+jins is because

  94.35: A gas can be taken from state ajprj x pi9xqg r,r4072 to c by two different reversible processes, a→c or a→b→c. During the direct process 7gjrx ppr4q, 90xj2ira→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 Volume b9 d8d *r:2l*kb 1ayq6x6pfvq o gcsy1graph shown, in the process of going from a to b 60 J of heat are added, and in the process of going fr:sbxopd*ryg1q8f6q kybc9 la62vd*1 om b to 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-,zsnbkyh 6n za(-j i;aiz 21i gas is isothermally compressed:

  97.15: Which of the following is always true for an isothea)0;ku4s5f kvgi jr ;frmal process of an ideal gask)u;s5ra;v j4ki gf0f?

  13.31: A monatomic ideal gas undergoes a r 1apg7rfx8 y:7r0 drhg8a:z hceversible isothermal expansion in an enclosed container. Which one of the followi7d1gr: azyax 0 c7hgr:fh8r8p ng quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaq1kyih* i z17aric expansion followed by an isochoric coo i7ya1*qhki z1ling. Which of the following statements must be true after the completion of these processes?

  11.44: One mole of a monat/9yc*/nkz3lq t v rix0m0(ui gomic ideal gas undergoes an isobaric expansion. In the process, the temper9y m tii0cl/g3r qnu/vk0zx* (ature 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 the surroundings?

  14.46: A monatomic, i6gsy:cx(lzp c /qddiqd -a- *:deal gas undergoes an isobaric process. During the process, the gas performs 80 joules of work on the surroundings. Which oaqd-s-l i /qcp*6:dg yz:d xc(ne of the following statements best describes the heat exchange during this process?

  07.40: Which is not true of an isochoric process on an enclose+ n(eb* j/ r:wm +bsdqqz-m5wj:tvn,le 2bu;td ideal gas in which the pressure decreasest2q:l / +wez +: r*(e n5-bqw;jdt,ubm vbnsmj?

  15.47 One mole of a diatomic ideal gas undergoes a reve 7.ghk+sk:my(fb /cjbrsible adiabatic process. The pressure and volume initially are given as P = 2.0 atm and V = 30 L. If the volume is halved during the adiabatic process, how mubf/h+bmjy.ck7s (gk : ch work was done on the gas sample by the surroundings?

  03.48: Two completely)(p0.ubvuw s,x2danq identical samples of the same ideal gas are in equal volume containers with the same pressure and temperature in containers labeled A and B. After the processes are perforduqsa, 0 nxpu)v2w(b. med on the 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 shows four different possible reversible 2plrq/9 8b0kf3z ucps processes performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Process C isr 0qu/ckbl3p zpf829s adiabatic. 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, and e7f1 )cj2wcfx T for an ideal gas, which one of the following reversible processes has the fw j2xe71c)cfmost heat associated with it?

  04.45: Container A has a u 8w zy ulcj) t9ma 3h4ya;ne*;v8z5zwsample of monatomic ideal gas, while container B has a sample of diatomic ideal gas. The two gases start with the sameyw 9wna hy4ma* zzecuuj8 zvt38l5; ); 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 ideal gas has pressurek5ownp z -w+m:/n-dl e P , volume V , and temperature T . Which of the following processes would result in the gp wemwn-5l-o zk/:d+n reatest amount of energy added to the gas from heat?

  13.48: Two identical samples of a monatomic ideal gas are to unde+i5 ip2nl w7l 2au(qsfm*:mgd rgo reversible processes. Which om+ nwg(27ls2 dm5ifil *uaq:pne of the following choices is a correct statement about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling