15.25: A gas undergoes the unusu7sq zkm ha k1qx*w:e2om8yv** ao ,4sjal 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 cyli hh/r9rk q)vn/nder, the stream of gas feels cool. This kqn v)//rr 9hhis because

  94.35: A gas can be taken from state a to c by two q5j4zk73)nmy4r7 mf63 zmn byerw2ixdifferent 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 process a→b→c, 25.0 J of heat are added to the system. How much wnr4k m57 mxwj3yn)i3 7 6 4meyfz2zbrqork is done by the system during a→b→c?

  06.26: In the Pressure versus Vo5 3q zqg0)emfglume 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 gq eg)3q5mf0z, what is the total heat added?

  96.22: When an ideal gas is isothermally comi/t 1foq f6zk7pressed:

  97.15: Which of the following is always true for ienlzu lb*4dqxwy*k6)j+)5i3 u xg+y)i pwe5an isothermal process of an ideaiu) ln4ep xl6u*3q)5+wei yjk5) d*yiwxbg+z l gas?

  13.31: A monatomic ideal gas undergoes a reversible isothermal expansiot.sdy 9(7 r6*jujtxlkn in an enclosed container. Which one of the following quantities associated with the gas has a valuslyrk7j(.6 tj dx*t9ue of zero?

  09.33: An ideal gas undergoes an isohho.hb1z vxqm7k2 *s9baric expansion followed by an isochoric cooling. Which of the following statements must be1hsh*o7. vqkm 9 2bhzx true after the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isobaric expansion. In 5ti v4qfk60/:i )hv9izddto wthe process, the temperature of the gas incr4h6qtdi )ko tziw09f5d: vvi /eases 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, idea, 2. .vvvazwrnl gas undergoes an isobaric process. During the process, the gas performs 80 joules of work on the surroundiwv rv..2 vnaz,ngs. Which one of the following statements best describes the heat exchange during this process?

  07.40: Which is not tr1e.og3- e+9-lbvvhq fxja/ uyue of an isochoric process on an enclosed ideal gas in which the pqueg -+h j-veal/yvo91 fb3x.ressure decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible 9e 46ttnp znctq 7 bf;a+x*2wbadiabatic process. The pressure and volume initially are given as P = 2.0 atm and V = 30 L. If the volume is halved during the adixp6eat+q;b tnwf2 7*n 4tbc9 zabatic process, how much work was done on the gas sample by the surroundings?

  03.48: Two completely identical samples of the iv 7qhw0*57;hkusj*0fd fwdx same ideal gas are in equal volume containers with the same pressure and temperature in containers labeled A and B. After the processes are7siuxfh* 5 ;w h fw0k0j7dv*qd performed 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 processes performz7t9naebnzh,w1c*u s *w c - 1y6pkll-ed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Pro1 l*yk*w lz-1 9zch-pn u wa6s7c,enbtcess C is 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 T for an ideal gas, wh 8 ,0q w e4s04qmx-3d2xyjgavw4pn xyfich one of the following reversible processes has the most heat associated 3s q4- jwx ,44aepxy g8n2x0fw 0yvdqmwith it?

  04.45: Container A has u-1 l 80j0 d6,kqcxlp p.sr6ibhzl 2ita sample of monatomic ideal gas, while container B has 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 revsbpc0-,li 6l1.d8trk6uj ix q plz02hersible 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 pressure P , volume V , and temperatuzec b0(kzq* a m1d; quzrk+:rfs 0*e8sre T . Which of the following processes would result in the greatest amount of enerz00dsek+r1b* azk s*z8fc qer;mq:u(gy added to the gas from heat?

  13.48: Two identical samples of a 8 co+ho(wb :mccod+q3.+ijta/ n;/vpcngsh1 monatomic ideal gas are to undergo reversible processes. Which one of the following cho mcg:n +jwns+ 3 o.8//a;oicoqhhp tbc(+cdv1ices is a correct statement about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling