15.25: A gas undergoes the unusgn7c,* xcv rq et40vf0ual 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 fromqtu1x (0uwmk vgc+) x2chi9 u) a pressurized cylinder, the stream of gas feels cool. This is becausuwx+92cthi0 k1vg)xcm u u)(qe

  94.35: A gas can be taken from statc/)2f h9)umj vrdt9nfe a to c by two different reversible processes, a→c or a→b→c. During the dir/))hf jnmvrf td9 29ucect 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 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 afc*n9 hn8.ix .c gza0v to b 60 J of heat are added, and in the process of going from b0n zx9ca.8c*in . vghf 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 compreo( )9 (.nvjhrviv6 bgwmzb:7bnnl7,j ssed:

  97.15: Which of the following is always true for an isothermal pr5(zpisollzfh4wm *z9gte - y3+( lv )0dznh 1yocess of an ideal gas wzn((lz5f9l)m p0h*ohv1z+yi4 -t3 e ysgzld?

  13.31: A monatomic ideal gas undergoes a reversible isothermal eck+m-9g0x dw txpansion in an enclosed container. Which one of the follk9dm +0tgc wx-owing quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric qk gg:oky 94g- 8wksy(wcdl94 expansion followed by an isochoric cooling. Which dwg y s kcgg4-wq9oyk:(984kl of the following statements must be true after the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isobaric expansion. In4 iijsd5d0+zu- yyw l(lxd56r the process, the 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 t xyl0-yi6wuj5d isdz+ (4rld5 he surroundings?

  14.46: A monatomic, ideal gas undergoes anzya-f-jqabuqf7/ 15 d isobaric process. During the process, the gas performs 80 joules of work on the surroundings. Which one of the following statements best describes the heat exchange dur-71afj zafqdbyqu/ -5 ing this process?

  07.40: Which is not true of an isochoric process oe4s -zr14 k(qqui4hxrn+9ee fn an enclosed ideal gas in which the pressure decre (h n4q+ krz4qfuri9xee-41seases?

  15.47 One mole of a diatomic ideal gas undergoes a revf-z7k h dt*as2ersible adiabatic process. The pressure and volume initially are given as 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 sur dtkh7*-z a2sfroundings?

  03.48: Two completely identical samples of the same ideal gas are in equal volmzdtake8 ) 0k/4o:wm uume containers with the same pressure and temperature in containers labeled A and B. After the processes are perfo t4uea:dkwk8m o/ m)z0rmed 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 pros1wh6wwhfttz* : *9 fukd(hmd tn;w:3 cesses performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Process C is adiabatic. Process D is isochorfut9k : 6nhs1d *wwtm3f;*(hwh ztw:dic (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 idkql0 h 8m,fn y.rkyf6/eal gas, which one of the following reversible processes has k0f.fr,km/q 6yn h yl8the most heat associated with it?

  04.45: Container A has a sample ofgk +ytr414ka vb81mpv 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 reversible adiabatic process that cuts the pressure in half. Which sample of gas is now at the hv8p1rkt 4+ b1avgy4kmigher temperature?

  08.44: A mole of a monatomic ideal gas has pressure P , 8l+ rull;xmg /pjf s93-zm (zdvolume V , and temperature T . Which of the following processes would result in the gr(l/l -39zfz urgsjl+8mmdxp ;eatest amount of energy added to the gas from heat?

  13.48: Two identical sample/*eho lb 9qg aa3-0vwbs of a monatomic ideal gas are to undergo reversible pr93a0vb el- ghao *b/wqocesses. Which one of 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