15.25: A gas undergoes the unusual procesl7 iz +j9.f9+5vn -rkash 7czkls*uwrs 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 $\mathrm{\Delta }$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 streamt l2zbpp09;:e+uzdyh of gas feels cool. This is because0dz z2 uye:pblhpt 9+;

  94.35: A gas can be taken from state a to7s9p ux p zm*0ihttp43 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 3*itzu9m7pxp 4ts 0ph done by the system during a→b→c?

  06.26: In the Pressure versus Volume graph shown, in vc k 78,qo jo6i5btvo*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. In the process of going a to c to d, what is the total heat adq*vcobi6 8tkjov5 , o7ded?

  96.22: When an ideal gas is iu-r n3j fx)uh+2 1cjswsothermally compressed:

  97.15: Which of the folc;lua mspg9t;( 3vlr 9hc2p-vlowing is always true for an isothermal process of an idep(g ca ;sc m39ll2t9-;urvhvpal gas?

  13.31: A monatomic ideal gas undergoes a reversible isothrmko: dre8d 4a 9wys,0ermal expansion in an enclosed container. Which one ofo:8 yk0 9,e4mraw srdd the following quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric expansittayo xl+p97qa3;bng / +px o3on followed by an isochoric coolitopg3by q xa;97/a+nt x 3opl+ng. Which of the following statements must be true after the completion of these processes?

  11.44: One mole of a monatomic ideal gas un d,izt /rnp(m +d nr-qs/7mva.dergoes an isobaric expansion. In the p/.a+trvqr -mdi zs(mn n/ ,7pdrocess, 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 surroundings?

  14.46: A monatomic, ideal gas undergoes an iso *vqwqh3p u9)fbaric process. During the process, the gas performu* fh39)q vqwps 80 joules of work on the 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 ideal gas in wh re:qg6q hqja*ws; do; bl1.(bich e6o;b. 1d(;:wjhgrq l aqsb *qthe pressure decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible a v:o+umhea(n-6lqe x-6j4g dv(i )wwv diabatic process. The pressure and volume initially are given as P = 2.0 atm and V = 30 L. If the volume is halved during t:eghwnv64mio-v q(+w)(v ajxu6 d- l ehe adiabatic process, how much work was done on the gas sample by the surroundings?

  03.48: Two completely identical samples of the same ideatd:op s 0s1ru*l 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, which is at the higher o * s:us10dprttemperature?
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 rofb n7*-t 5bpnhkxio( )xh2ve;w+kn *eversible processes performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isotnth kn)o*7kp v f we-*;(+x5boni2 xhbhermal (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 the fol t-8zzc;l uy:unpvq ny7n.(f89de *nclowing reversible processes has the most heau7uy*9;(8 :ncv l cdnztp n-ye8nqf.z t associated with it?

  04.45: Container A has a sample of monajs9lpo)ahf v.)ni96 ; w u4e9clvn a7atomic ideal gas, while container B has a sample of diatomic ideal gas. The two gases start with thivun w7ej9a4lls96p)an hv)o a9.c;fe 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 monatomic ideal gas has pressure P , volume V , and vp.1 mgiu)k:,ockvm7: f d7u2/hv lfitemperature T . Which of the following processes would result in the greatest amount of energy added to the gas)vmphu fvic, / lf.k7md u72kgovi: 1: from heat?

  13.48: Two identical samples of a monatomic ideal gas arelr b-wd7 9uakx pt9 5*,jecu3y to undergo reversible processes. Which one of the following choices is a correct statement about the heat asc,59plbjxuw e9dr3ta7*u- yksociated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling