15.25: A gas undergoes the unuk et7+fn3d n4hw v;pk+s5y xp2sual 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,5g0a yt7 yg8dg the stream of gas feels cool. Td5g7y agytg80 his is because

  94.35: A gas can be taken from stazb5,ld b4;w y: nr)ehjtgs7i,te 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 thw5,n hb edzl4:y ,7ijgrs);bt e 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 pro4x/skrw7yl*emhv*4g4 )qpg gr4 8 qpvcess of going from a to b 60 J of heat are added, and in the process of going k/*84rmp)yr7wh xvg gvpg4q4l*esq4 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 isothermally compresses qp)2yguoyekxv1 r 7s8s-7s-d:

  97.15: Which of the following is always true for an isothermal proc; ygz-tur4y1 t9vm-o pess of an ideal gas? -gv9zuyrtot p-m4y1 ;

  13.31: A monatomic ideal gas undergoes a reversible h9)t:vpv uep6o4il* s isothermal expansion in an enclosed cop:*se uv4)p itoh l96vntainer. Which one of the following quantities associated with the gas has a value of zero?

  09.33: An ideal gas undqc-a,p mj .ov/ergoes an isobaric expansion followed by an isochoric cooling. Which of the following statements must be true after the completion of thev,j m/ capo-q.se processes?

  11.44: One mole of a monatomic(t6w w+lrke 5ldds5 dd2 fd6+z 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 fz5+dd (dd 2ll+te6sr5 w kd6fwollowing choices best represents the amount of work done by the gas on the surroundings?

  14.46: A monatomic, ideal gas undergoes an isxbu3tn4 7i6isn89 8 no vrl9qyobaric process. During the process, the gas performs 80 joules of work on the surrounos49ir bi8l8t7 yu963 nxnnvqdings. 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 ide z.)- 8zsrncomk*xcvs;s pb+0al gas in which the pressure decreases-vr;zn .0xcs8zcp)m oss+b* k?

  15.47 One mole of a diatomic ideal gas undergoes a reversible adia5bwdhh(g /cmvkl s 7zq a0ro:yn22w55 batic process. The pressure and volume initially are given as P 507kqzhg5/l5dw2m :o n ( acyhsbw v2r= 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 in equal v vd8ac: s4ro. y;*hzzgolume 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, whic4 8s:vgrzz;cd* aoyh .h 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 processes per2 nw zbxd3l,to0;a c;rformed 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). F xcozratlwn ;b2 0,;3dor which process(es) does the temperature of the gas decrease?

  16.48: From a given state of P, V, and T for an ideep5a 31ggl7oial gas, which one of the following reversible processes has the most heat associated with li5o7a1 e pgg3it?

  04.45: Container A has a sample: a3*y1 d zcqfq(oq3gd of monatomic ideal gas, while container B has a sample of diatomic ideal gas. The two gases start with the same initial(3qqd *o31:dzyc gf qa 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 id8wiog/m2p1 boas2: gveal gas has pressure P , volume V , and temperature T . Which of the following processes would result in the greatest amount of energy added to the gb2aw2 g1v8: oo gpim/sas from heat?

  13.48: Two identical sampl d1 rc8d5pvd3wes of a monatomic ideal gas are to undergo reversible processes. Which one of the following choicewdv 8dpcr51d3s is a correct statement about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling