15.25: A gas undergoes the unusual f6 7h * crefl8n4zbj;c.cj+ vnprocess 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 pressur1lgsfzk(f362a9q k o kwa/5dk/n8 nq cized cylinder, the stream of gas feels cool. This is b6akq(5/kflsnwc/2o3a9qdfgnk 8z1kecause

  94.35: A gas can be taken from state (i3 n +kmnd(ruu 7gfo(teuy9f h76+ bfa to c by two different reversible processes, a→c or a→b→c. During the direct process a→c, 20.0 J of work y(hu 36d 7t7ffmfuu (o+g+r9n ik(enbare 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 graph shown, in thzy4n* 1vil, h ts35wjde process of going from a to b 60 J of heat are added, and in the process of gol jnvz4w3*1h5d, isyting from 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 gas is isothermally compressed:u4)np,2rrxn :cxkf 1 fc-i ci2

  97.15: Which of the following is always true for an isothermal process of an idt+ ;pahk)mra 4ehk apa)+mr4;t al gas?

  13.31: A monatomic ideal gas undergoes a reversible isoaut6.ml, 8or uthermal expansion in an enclosed conru mo6l,a tu.8tainer. 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 isochoricqsw42jyp ckv0 *3qx j.cfkt2* *rtp,c cooling. Which of the followin ps2c cj,vp.fy2 3t4 *0t rkcq**jkwqxg statements must be true after the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isobaric expansz*zzbv ,e+q wig:p z.-ion. In the process, the temperature of the gas incezb z+qv*zp w,.:izg-reases 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 ..qk r7rwn um :( cft2c,nss0rgas undergoes an isobaric process. During the process, the gas per(kqs07 sr2cw ,rrfnucn:mt..forms 80 joules of work on the surroundings. Which one of the following statements best describes the heat exchange during this process?

  07.40: Which is not true of an isou md 5/k hen2..tibt5l)gal(echoric process on an enclosed ideal gas in which the pressure dect/ .2(knaue l.thl5e gidbm5)reases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible a sn4goo2kl du/-8jbh)diabatic process. The pressure and volume initially are given as P = 2.0 atm and V = 30 L. If the volume is halved during ud lk24h 8njoso/-bg)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 equb wyore8;hh:ytd+( n: al volume containers with the same pressure and temperature in containers labeled A and B. After the processes are performed on the gases in containers A and B, which is at the higher tempew(bn r+h y hotye;8d::rature?
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 perf+lg anryi44.5kj f7cmormed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Process C is adiabaticf7r4+ligm4c. kjy an5. 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, wrt,asalo,fwga .( 7-ohich one of the following reversible processes has the most heat afr,,7.aatl a-go( ows ssociated with it?

  04.45: Container A has a samplej)lz4)x* anmw 6c2l q9b yl5uu of monatomic ideal gas, while container B has a sample of diatomic ideal gas. The two gases start with the sa94 xqyuw5l6*2n)lm)ubl acz jme 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 pressure P , volume V , ap;oymu 6d hb()h/n (uge +djg4nd temperature T . Which of the following processes woue;y/u mp 4dhb(6ghon j() ugd+ld result in the greatest amount of energy added to the gas from heat?

  13.48: Two identical samples of a monatomic ideal gas are to undergo reversible ,znsbfw53f3z xq+3 vl processes. Which one of5s3qzfv x3nbz,3f+ lw 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