15.25: A gas undergoes the unusu +mme67)movuxal 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 cybkb5 lu sm:lh)q0o :6slinder, the stream of gas feels cool. klhbb 6m)sl5 so0 :q:uThis is because

  94.35: A gas can be taken from state a to c by two different reversible pro:iz: rv(9 lg 6htxuc.ocesses, 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→bh9r g .oucx(il:z6v :t→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 process of gojm7 snqg) g74h9cb5 rqing from a to b 60 J of heat are added, and in the process of g9rcn h5jgm7sq4)b q 7going 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 isber ilpx+gk)1; m56j 7 n1rq(g u5dgvrothermally compressed:

  97.15: Which of the (c kx mrvhzfqlpkjg26pml2 ..de, 8.56o+a qtfollowing is always true for an isothermal process of an idea .zqd,ocfgj2lk8lmv5h x6.ptp 6. mqrek +(2 al gas?

  13.31: A monatomic ideal gas undergoes a reversible isothwf73(zz4(- m tszbaa vn aa-/cermal expansion in an enclosed container. Wz/t- fsnv zba3 74-amwc( (azahich one of the following quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an myoj a 6ipdr*j-cgc7bmbto*:0g8 (: fisobaric expansion followed by an isochoric cooling. Which of th*jm7tyrcodibg *p( m:j 08 bga-6:foce following statements must be true after the completion of these processes?

  11.44: One mole of a monatomic ideal gas undergoes an isobaric expansion. In tr/k tpd46-gt 9vev5wk he process, 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 bygdtp/5e-rt kvw96 k4v the gas on the surroundings?

  14.46: A monatomic, ideal gas unt( .r,t*ugzt/z gv0/z/4vvoejre/qudergoes an isobaric process. During the process, the gas performs 80 joules of work on thett.zgtvurr joqge/vz,/ ( ez *//04vu surroundings. Which one of the following statements best describes the heat exchange during this process?

  07.40: Which is not true of r8:.co 1 gu7znkhio;p an isochoric process on an enclosed ideal gas in whichuk:znh;o7 crip 18go. the pressure decreases?

  15.47 One mole of a diatomick9sdc) ba/(eyb.hc- p ideal gas undergoes a reversible adiabatic process. The pressure and volume initias9cdc)ebp/ .y(a bk h-lly 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 identical samples of the same ideal gas are in equal voluxllk, gnh3 ;(csk;8por *g;csme containers with the same pressure and temperature in containers labele sg;(lp 3lrs;; kh8,gcn *kocxd 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 diffev4lr n0vxy *6mn3m,i vrent possible reversible processes performed on a monatomic ideal gas. Process A is isobaric (constant pressure). Process B is isothermal (constant temperature). Processv rv,xnl*3nv 6myi m40 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, Vw5z/s u r*g)tk, and T for an ideal gas, which one of the following reversible processek5tzu )/s rg*ws has the most heat associated with it?

  04.45: Container A has a sample of monaty*do7 yxl7icqq5/ j. womic 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. c/q*yix y 77w.ljqod5Each 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 monatom5pnxwuj g 1z+;ic ideal gas has pressure P , volume V , and temperature T . Which of the following processes would result in the greatest amountu ;5w +gjpxnz1 of energy added to the gas from heat?

  13.48: Two identical samples of a monatomic3 igt35duu5en ideal gas are to undergo reversible processes. Which one of the following choices is a correct statement about the heat associated with d 5un33 igut5ethe processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling