15.25: A gas undergoes the unusual y4zf c ;.38 tcoxtoe)t;uf lsx69tkt2 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 cylinm 1w;1r/p.lv4 agsqow der, the stream of gas feels cool.po.s/v 41awgm 1;rwql This is because

  94.35: A gas can be taken f(xxdczm(sq+y b6:3m from state a to c by two different reversible processes, a→c or a→b→c.yz :qdx((b63sc mf+xm 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 during a→b→c?

  06.26: In the Pressure versus Volume graph shown, in the q 0ub8ui,g:t uprocess 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 g 8:uu giuq0t,boing a to c to d, what is the total heat added?

  96.22: When an ideal8vw/,b/ kpe-sum l)kr gas is isothermally compressed:

  97.15: Which of the following is always true for an ie4obywwbqy+/;ig y0-o /.vv r sothermal process of an ideal;ov/yw0-i yw.4r/gy ebobv + q gas?

  13.31: A monatomic ideal gas undergoes a reversible isothermal expanes c(*qoya p2pkz0+ /msion in an enclosed container. Which one of the folloa0 mkesc /pq(o2pzy+ *wing quantities associated with the gas has a value of zero?

  09.33: An ideal gas un0 .q 1) ,a3shltkwylw/+m ughxdergoes an isobaric expansion followed by an isochoric cooling. Which of the following statements must be trqltugya,)+w hhws 10kx.m/l 3ue after the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isodv6 8ud(oct n m94v1w;z3 tngkbaric expansion. In the process, the temperature of the gas increases from 300 K to 500 K. Which one of the folv kc;vto 84gdu 61wd(zn9m3tnlowing choices best represents the amount of work done by the gas on the surroundings?

  14.46: A monatomic, ideal gas undergoes an isobaric process. Duringh78 8to5 t-w9vk uwif9pfv8 b,3cuxgp the process, the gas performs 80 joules of work on the suu 97t-fbto 5i9w8k8hx ,g3pcv vpw u8frroundings. 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 a,vv5wow:ha1 ideal gas in which the preawhvo,:5va1 w ssure decreases?

  15.47 One mole of a diatomic ideal ,-mgqrmpfwg +2 .qp dc0*)cw tgas undergoes a reversible 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 optgd -f.mw0+crqq)c p2 mg*,wn the gas sample by the surroundings?

  03.48: Two completely identical samples of the same ideal gas are in equalhp3e5qsqh) d: q(0knb volume containers with the same pressure and temperature in35(eb k sqqp:hn)0hqd 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 possible reversible processes perfl1b ,p8 i;fsjc0oz( idormed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal 8 s; c(j0bfioli1dz, p(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, Vl x1xv(dg7c p7*9o:v b nv-h2w:epqsl, and T for an ideal gas, which one of the following rebwg 1vv-nvph7(x:: xcl9 ol*2qspe 7dversible processes has the most heat associated with it?

  04.45: Container A has aky8.dae(cf;6 yyro )e 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 that cuts the pressure in ) ayky.6oc er;8feyd( half. Which sample of gas is now at the higher temperature?

  08.44: A mole of a monatomic ideal gas has pressqwa4) bltam 1-ure P , volume V , and temperature T . Which of the following processes would resulamq4-w)1a btlt in the greatest amount of energy added to the gas from heat?

  13.48: Two identical samples of a mo3l0c k x:kyy4j)s-v1h 0:vpw( idvo kjnatomic ideal gas are to undergo reversible processes. Which one of the following choices is a correct statement about the heat associated with the processhk lvv cokwijyyv14) sp(00x:- :3djk es?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling