15.25: A gas undergoes ne(zl 3e;5ny,id; bjc 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 from a preyigs4ww :dj;.- re cu6ssurized cylinder, the stream of gas feels cool. Thi-:;u6ig d jwwys. r4ecs is because

  94.35: A gas can be taken from state a to c by two differw-yl0je/a)gt-w+ eg zg *;bm pent 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 azeb)w p*-la-mg ;wgj0y /gte +dded 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 the process of going from 4ufjb s2 g/s71 bm/h-rkytp0wgqa0 *ga to b 60 J of hub/jgy1 ap2*gmfw/t7qsg- b 0h4r s k0eat 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 /abg-:)a hwekisothermally compressed:

  97.15: Which of the following is always true for an isothermal process od6sfm6b :;fwutvw 3:lf an ideadwtlbw;smf6 3 6 f::vul gas?

  13.31: A monatomic ideal gas undergoes a reversible isothem 0el (hrjx e*p*f55wdrmal expansion in an enclosed container. Which one of the followin e*ld(*e0 xp55hr jmwfg quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric expansion fyy wzy cagh 6a 701m0va c9*w+)spko4wollowed by an isochoric cooling. Which of the following statements must be true after gyyw z +aacwws607yahv41 cpm o)9*0k the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isobaric ebj d7,y3/6o fqlp:r nq(r j3afxpansion. In the process, t:j6r3oy/b(pr fjqf7d l3,n a qhe 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 the surroundings?

  14.46: A monatomic, ideal gas undergoes an isobaric process. During )ikh/q ygewjo5dmh +u+i )9)xthe process, the gas performs 80 joules of work on the surro )j5 x+id eugm)qhh)ywi +/9koundings. Which one of the following statements best describes the heat exchange during this process?

  07.40: Which is not true of an isochoric process on an enclosed ideal gas in j7nifn+ff,x.xe 8 5n kq.aer9 which the pre i+.nejn9k5ffx.7e frnaxq ,8 ssure decreases?

  15.47 One mole of a diatob 7nb.k ep*f90d 8eimc*.cqgv mic ideal gas undergoes a reversible adiabatic process. The pressure and volume initially are given asf.dk i be ecpv89.q*b*7nmcg0 P = 2.0 atm and V = 30 L. If the volume is halved during 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 in8b0yt:tpb ng+ equal volume containers with t0tby pb+n8gt:he 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 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 reversible1e z5tgysq3p frkxr(n,hc3 6up:3 a1r processes performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B ishap5:1 6rqk31 ,3 zpef3nstrcxy(rug 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 of the f4kq-xmn 2q6rrz :f1nrollowing reversible processes has the most heat associated with ixq-rf12 k4zq rrnm6:n t?

  04.45: Container A has a sample of monatomic ideal gas, while containgy9hy1ts8 tg1a rk*w 0m7h +cger B has a sample of diatomic ideal gas. The two gases start w78 10w* hs+tkaythcg m9y1g grith 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 ideal gas has pressure P , volume V , and tempery90 rixyo54c-w 8beraature T . Which of the following processes would result in the greatest amount of energy added rbyy5ecw0-49x oi 8r ato the gas from heat?

  13.48: Two identical samples of a monatomic ideal g8mngp21 pbn7wi4xv;l as are to undergo reversible processes. Which one of the following choices is a correct statement about the heat7m1wbpxvgp 24n8; i nl associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling