15.25: A gas undergoes thbabd/d7xh g p+sfh,e+w ;d9 mq4;mk .fe 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 pressurized cylinder, the strea: bnuntsi5)i x2hpfaf- v,7cli5 ;9ftm of gas feels cool.lini,;9ibp75huaft-t 5f):xv scf 2n This is because

  94.35: A gas can be af z2:/ .oa wgda-:ywptaken 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 system. How much work is done by the system /o:-.2p:awzda a g wyfduring a→b→c?

  06.26: In the Pressure versus Vmf; f76 v*ohkwolume 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 ;o fwf7kv6 m*hto 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 ks: q.rku osn;,s+s l4gas is isothermally compressed:

  97.15: Which of the following is always jyygfm:5 ymic8y7kb -t*1 jq2c zw(p4 true for an isothermal process of an idealicpmq yz* y(y: b1fm5c2j47 j8 kwygt- gas?

  13.31: A monatomic idnf6/i:b ich bey svb)o9t v-/4eal gas undergoes a reversible isothermal expansion in an enclos y)bsh-6 btn4c/bi:ievf 9/oved container. Which one of the following quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric 7 kce ,sw zx):ho-;aswexpansion followed by an isochoric cooling. Which of the following statementc;kwhs7e,sx- wa:o)z s must be true after the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isobaric expansion. In )3ut 8xz1ln s,f:,z pe;clypwthe process, the temperature of the gas increases from 300 K to 500 K. Which one of the following choices besfz 1uppl, w ; x,ec:tz3yn8s)lt represents the amount of work done by the gas on the surroundings?

  14.46: A monatomic, ideal gas undergoes an isobaric process. During thgjyu6 )53gwqje process, the gas performs 80 joules of work on thejuwy3 gqg)65j surroundings. 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 idek)v6 35h4rcbchc:vo5+ca swjal gas in which the press c+ v5 ckhr54:w)bscja63cvohure decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reverspmch+ uslvj+ q ( m4x.,spck(xg8hk(5ible 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 surroundingschgc+ p(v + k5um.xlp 8sh4 q,mk(sj(x?

  03.48: Two completely identical samples of thyuatk j9wa 4h3q );1ohe 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, whiq1y h4w;a)k 9o3h jtauch 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 differei* e1 o1hzi;ednt possible reversible processes 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 isochoric (constant volume). For which process(es)hedo1z i; e*i1 does the temperature of the gas decrease?

  16.48: From a given state of P, dzye-agw3o22V, and T for an ideal gas, which one of the following reversible processes has z g-w3eady2o2the most heat associated with it?

  04.45: Container A h )rmbtz m ,w (4 scejuvbm)-:pphe59:pas a sample of 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 t5) r-pmvs: hpb4zu9)ep:cwm je,(mb 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 pr47lt:qu6+5.6p anxh 9eh ggm tdm+h zeessure P , volume V , and temperature T . Whimha+. 9q+pnletuzdt6gx5 gm47 h e:h6 ch of the following processes would result in the greatest amount of energy added to the gas from heat?

  13.48: Two identical samples of a md 2w55xu/v 1lshopq r(onatomic ideal gas are to undergo reversible processes. Which one of the following choices is a correct statement about the heat associated with thh losxu(55vq/r p d2w1e processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling