15.25: A gas undergoes the unusua/r t2zg k5khzlaqze6hm (9en 6 x-eg e3w;e4z1l 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 7ipf tw983a3 8j: ih3lmti g xnyz(f8vkt3 ss:cylinder, the stream of gas feels cool. This h v8isln i3gi9z8t37pf:3satwxf: 8tk ymj (3is because

  94.35: A gas can be taken from state a to c by two differeohv /kj4u: cu0nt 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 duri:o/h4c vkuj0u ng a→b→c?

  06.26: In the Pressure versus Vo1i-r;+m q 5icfjs yur)yg,v6ll 2l(h plume 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 20 J of heat are added. Incu+ir 5l lyv6-,f yjs i(qm)p2 ghr1;l the process of going a to c to d, what is the total heat added?

  96.22: When an ideal gapoklhp 6alf ;3 s1ax..s is isothermally compressed:

  97.15: Which of the following is always true for an i:zfvqnv +oz r, 7j9h )k4j3tbqsothermal process of an ideal gatjoq3 4f7vhjv,)b +z9:q nz krs?

  13.31: A monatomic ideal gas undergoes a reversible isothe;-mc i52npu99drjq hom. 1rnqrmal expansion in an enclosed container. Which one of the following jnn5omm2qqc9 rirp-uh. ;19d quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric expans 12q9(qg. mo loagbm(hion followed by an isochoric cooling. Which of the following statements must be true after the completion (g9go qb.ham12l (qmoof these processes?

  11.44: One mole of a monatomic idea6xw/2.tvd n8qpp4su b l gas undergoes an isobaric expansion. In the process, the temperature of the gas increases from 300 K to 500 K. Which one of the foll62psuqt4xpw/ 8. dnvbowing choices best represents the amount of work done by the gas on the surroundings?

  14.46: A monatomic, ideal gas undergoes an isobaric process. During th,g,q.q a0wct6npqd )u w uhm1dlo8;/x e process, the gas performs 80 joules of work on the surroundingxlcn )u, qp;08owamqt.h1uw/d dq6 ,gs. Which one of the following statements best describes the heat exchange during this process?

  07.40: Which is not true of an isochoric):/eyw l; jva,1.ollodp uiz0 process on an enclosed ideal gas in which a,)z./e;dvl l0yj poiwol1u : the pressure decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible .7f.;t1 parh( psx69krl tgy tadiabatic process. The pressurep.a(9tg7.r ys1plh f;6xrtt k 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 surroundings?

  03.48: Two completely identic4u3* xl1d 4qxq+zkjgd al 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 inqzk 3d+gxjxq* u4l41d 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 showsi9 c e0l-m4fw nrpb1hea( nkjz,c9 v8- four different possible reversible processes performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Process C is9eifncc4,1lm-8h9arw vnkj e0 -(b pz 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 oexw w0eao255 kne of the following reversible processes has the me25w5 kxwa 0oeost heat associated with it?

  04.45: Container A has a sample of monatomic ideal gas, while +dipf)e7vpcwj2 )) oncontainer 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 sc)ne )v2+ wijpo7dfp) ample of gas is now at the higher temperature?

  08.44: A mole of a monatomic ideal gas h0ae suv5v-i:; roda 7cas pressure P , volume V , and temperature T . Which of the following d 5 a-o0usar7:;evivc processes would result in the greatest amount of energy added to the gas from heat?

  13.48: Two identical samples ghv9n.u fx frtanx)(0zzs c59uw/+ n9of a monatomic ideal gas are to undergo reversible processes. Which one of the following choices is a correct(r9c/x9)z xvz+s 5t0nn.9uwag n fhfu statement about the heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling