15.25: A gas undergoes2c*p c1sp0qcv the unusual 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 frp;n.wxciyq9f 1g l 4w,om a pressurized cylinder, the stream of gas feels cool. This is iw ;,n. lwyqx41gpf 9cbecause

  94.35: A gas can be taken from state a to c by tyms-fym s5gln wmz 1xmo)a+:dlm3y*p6 s2l(,wo 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 process a→b→c, 25.0 J of heat are added t+1 :ans2* ()lo mldg-5f lm3 wpzymyms 6,xmyso 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 going v jy:jg2s ,(gcknmb, 6 cp,d2yfrom a to b 6gcs(2kgy,j c:6npb mjy ,v2d, 0 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 heat added?

  96.22: When an ideal gas is uzdylt3 c-ay js -tub9.mo.-5 isothermally compressed:

  97.15: Which of the following is always true for an isoth iaozn-:01im7( exevbermal process of an ide ve7m-i0zabnox1 :e (ial gas?

  13.31: A monatomic ideal gas undergoes a reversn-3 cvk h*jp5,u+ik6utwuwj9ible isothermal expansion in an enclosed container. Which one of the following quantiutj 3 u*hk wpui+5n w6vj-9k,cties associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric expansion followed by an ,2ejeu dun36kisochoric cooling. Which of the following statements must be3ke26,und jue true after the completion of these processes?

  11.44: One mole of a mo00u zj fju7,9iqvao-yyuz/2 mnatomic ideal 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 2uq0ajz0uf-mj9vu i ,o /yz y7choices best represents the amount of work done by the gas on the surroundings?

  14.46: A monatomic, ideal gas undergoes an isobaric procesox cs4(n(b jom0dpm/. s. During the process, the gas performs 80 joules of work on the surroundings. Which one of the following state(/ .xp0(ob n cd4sjmomments best describes the heat exchange during this process?

  07.40: Which is not true of an isochom 0nrgc,hpo4a (xp4(lric process on an enclosed ideal gas in which the pres,orcal (gxnp(p0 4m4hsure decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversibled3q1n+psb92e2 qri 2 :5ihj o upw3gxy adiabatic process. The pressure and volume initially are given as P = 2.0 atm and V = 30 L. If the volume is halved dur eisiqdjp5gyu2x whn:qpb31ro +329 2ing the adiabatic process, how much work was done on the gas sample by the surroundings?

  03.48: Two completely 7dfaw1ir4 g0uidentical 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 performed on the gases in containers A and B, which is at the higher temperatugfw71uird a4 0re?
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 reversic w 6-y --h*uswewkv6mble processes performed on a monatomic ideal gas. vw*ycuwe-k6m6-sh- w Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Process 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, which one ofn;/pwzgg 6w l dg 28r hmpn/5i5ttq,r1 the following reversible processes has the most heat as h56/iwgn8rz,5td l2tqnp1g;/rpmgwsociated with it?

  04.45: Container A has a sample of monatomic ideal gas, while container B has a 3c/*a u,vcoxl6ktrg7ty y0;u sample of diatomic ideal gas. The two gases start with the same initial temperature, volume, pressure, and number of t*uvx7ly;,rgct0o3c uy/6k amoles 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 ;uz q s bt+35scd5)2 a1gzycg vke b7)s3xxh6vgas has pressure P , volume V , and temperaturqz33 ktg )shsdag +v26 1xv7zucc5sb )x5 e;bye T . Which of the following processes would result in the greatest amount of energy added to the gas from heat?

  13.48: Two identical saghv .xwwbnhaayu/3:*z( j9f 8mples of a monatomic ideal gas are to undergo reversible processes. Which one of the following choices is a correct statvaah9 nx:w yh g8(w3b .ufjz/*ement about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling