15.25: A gas undergoes the +em x;+qgj; dkunusual 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 pressurized b 650lp; zfaohcylinder, the stream of gas feels cool. Thb a pl5h6fz0;ois is because

  94.35: A gas can be taken from state a to c by two differen3bw rrd*zue v(zl6y 4;t 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 system. How much work is done by the sly rderw3(z;*zub 46 vystem during a→b→c?

  06.26: In the Pressure versus Vokr7yhd 9i 5(t8y9c0(bgajme mlume graph shown, in the process of going from a to b 60 J of heat are added, and in the process of going from b to d 20d 5 ikmycyg(0b9mer 78aj(ht 9 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 isotherma e,ixdw c9l*s.:ucn* .)uqwlpf2zcv+lly compressed:

  97.15: Which of the following is always true for an isothermal process of 8dr)-z yjz secep y;:/an ideal g sypcy/8r:je-; dezz)as?

  13.31: A monatomic ideal gas g d4ol. .3a+ fq0x gzqtmmby3*undergoes a reversible isothermal expansion in an enclosed container. Which one of the following quantities associated witmggzox+mbq30*. y.tf3 4l qadh the gas has a value of zero?

  09.33: An ideal gas undergo 5k1jefqpwirh. ;z0 3*zhjaeqt-x38 ces an isobaric expansion followed by an isochoric cooling. Which of the fole 1p- t8h x3j.wjqqi5azcfe* 3zkr0; hlowing statements must be true after the completion of these processes?

  11.44: One mole of a mq+z m2qc,u ( q1b-xzhmonatomic 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 choices best represents the amount of work done by the gas on the surround(zb21cqhz mumqq-,x + ings?

  14.46: A monatomic, ideal gas undergoes *-hg1prwlh/-h*xy;t+im3c sd zr7 elan isobaric process. During the process, the gas performs 80 joules of work on the surroundings. Which one of the following statemz-s1hl*h h3;irg-epw +c /tlrmx* dy7ents best describes the heat exchange during this process?

  07.40: Which is not true of an isochoric process on an enclosed ideal gas in)94t6i oajuq cp9qbnp, *.bgrv( ptd 9 which the pressure deba p*, p)q9n6bu 9(r 9idtjpt.v4gqcocreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversibo8/i b5 f(ipjjle adiabatic process. The pressure and volume initially are given as P = 2.ibj /jf58i op(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 r5cqt 5 +vvet 0-wyh3j3l6xg4 iof 8iygas are in equal volume v hi5 x54f0w qtl83j- 6ioerytgy+v3ccontainers 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 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 possibrb7e9z*phz* kivl7txrgpx/u7*m 5 3 ole reversible processes performed on a mxoer**gz9xi7hpp 7vt k5b lz*73m/ uronatomic ideal gas. 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 of tdt/l0mk*(/ho l d6oomx bv*dsv +kb26he following reversible processes has the most heat associated with ik bkt66vm*/oold+hmdbxd(l o/2 *s v0t?

  04.45: Container A has a sample of monatomic ideal gas, while containk4 njyc:b sf7db8.nvrd;*vv*er B has a sample of diatomic ifjv7y;v v84n .*br ckdb:dns *deal 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 higher temperature?

  08.44: A mole of a monatpqme;l5 v)c4zomic ideal gas has pressure P , volume V , and temperature T . Which of the following processes would rep vlm45qz )c;esult in the greatest amount of energy added to the gas from heat?

  13.48: Two identical samples ovl(hks;a 8a4jf a monatomic ideal gas are to undergo reversible processes. Which one of the following choices is a correct statemea8v(;lkja 4hs nt about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling