15.25: A gas undergoes the un6:uf* wpzkd z7*mi5rkxeih-. ,cp c 7d7xu9dq usual 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 y6 .9jvpltt8y from a pressurized cylinder, the stream of gas feels cool. Thisvy t86lt yp9.j is because

  94.35: A gas can be bc+/ /akqqe+t9 * i(f,wowdbkov(n-q taken from state a to c by two 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 to the syst+/ te nc-kw (kabv+/d *iqqowqo,bf9(em. How much work is done by the system during a→b→c?

  06.26: In the Pressure versus Volume graph shown, in the prav e ub9abw*ey(/m06rocess 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, what is the total hve*a6 b/ 0euay(rb m9weat added?

  96.22: When an ideal gas is isothermally cf19pl gkr lj)6ompressed:

  97.15: Which of the following is always true for an ic*1ez 4 1.n;x px6l*mjmm rn gvt3t+lasothermal process of an ideal g m mxg r6;p *t1*.xl et1cvmlna+nz34jas?

  13.31: A monatomic ideal gas under m:+jpat+vcu/d g6bt-9 du( orgoes a reversible isothermal expansion in an enclosed container. Which one of the following quantities associated wi9(gc+td:au pmrb u6-+vj/ dtoth the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric expansion follow bpm9t8hfy p38ed by an isochoric cooling. Whip8ym3h pb98ft ch of the following statements must be true after the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isobar4z mp-;p7l afs89 f g7qgyf3 sx/0jzjpic expansion. In the process, the temperature of the gas increases from 300 K to 500 K. gsppmja- lfs4z7px9 ;3fgyz0j8/ fq7Which 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. During6q08fohjdo*az 9qb p/hzjv + * the process, the gas performs 80 joules of work on the surroundings. Which one of the following statements best describes the heat exchange d +qqjo6*hpfz9 zj/bahv0d *o8uring this process?

  07.40: Which is not true of an isochoric process o mo 6 gmnojv72px g(0vtnp51/zn an enclosed ideal gas in which the pressv5ov0omgj gp2t/ mx7p 6nzn 1(ure decreases?

  15.47 One mole of a diatomice f* + f)g u wnyl)/yhygm8v;jex;yzds/q,/ t- ideal gas undergoes a reversible adiabatic process. The pressure and volume initially are given as P = 2.0 atm and V+; )ez /ygv j x8,e)fu- nsqlwf;yhd*ygy/m t/ = 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 /ro p)x:vjsfi * 7ob7oidentical 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 containe xs 7/fobjvio7:p)* orrs 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 processex51.nnbt leg hirb-l; ,dlg /0s performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is.xd;i 5r/g, llegn0h1nlb -b t 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 ofqqrm2f3 5byy) P, V, and T for an ideal gas, which one of the following reversible procey2fm 3)qyrqb5 sses has the most heat associated with it?

  04.45: Container A has a sample of monatomic ideal gasxzrt1n7t ci)iio4m +8 , 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 reversible adiabati i1tt8 xn+cz7o4ir)mic 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 pressur;b0eampg dx 0x3gm/q m9 z5k.ge P , volume V , and temperature T . Which of the following processes would result in the greatest amount of energy 9xe3 b.kg0gdamxq/5m;mgz 0padded to the gas from heat?

  13.48: Two identical samples of a monatomic ideal gas are to undergo reversi za3ba(;tvdfz/92 dzf d1g yf6ble processes. Which one of the following choices is a correct sff;v93b(yg ad/z 6z1da d2 ztftatement about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling