15.25: A gas undergoes the unusual process ucf:z, +lyh/m 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 pressurizenfn z1fc3d-6 bd cylinder, the stream of gas feels cool.fdz3n -cfb n61 This is because

  94.35: A gas can be taken from state a to c by two different reversible processes02hw3r x1k.ryaeg33r u qfm, /jjji,s, 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 procjgj3 ur.1 fj3xw/m2qa0,,sr3 yr ki ehess 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 ve76t 8jw49ps7bi fvlnus+nkn + rsus Volume 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 hef iun46w 8s+9js+ 7bn7lnvktpat 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 compresy) (ai byl-m:7bsq 73o5haloosed:

  97.15: Which of the following is always /zi660hp:qd0q me j6o7go,t h )eufxwtrue for an isothermal process of an ideal gaiej6:wm7xg00, q e)qdfphtz ou66ho /s?

  13.31: A monatomic ideal gas undergoes a reve- owv9,w ,fxkijl z4 -db+aa2ersible isothermal expansion in an enclosed container. Which one of the following quantities associated with the gas has a value of zfea,+z9wja4, -ikdox w- bv2lero?

  09.33: An ideal gas undergoes an isobaric expansion follgol ,xh ull+2u3u 9 kpt9f65xmowed by an isochoric cooling. Which of the followin92guk upl 9l5+u 6o3xxfmht,l g statements must be true after the completion of these processes?

  11.44: One mole of a pq0(hz7r -lebp (1fe+p.ap7 w-i wq uzmonatomic ideal gas undergoes an isobaric expansion. In the process, the temperature of the-(w 0( f 7iaehulp pbp+eqw1qr7zp. -z 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 undergoez p70a ;hvj 34bmaf-ibs an isobaric process. During the process, the gas performs 80 joules of work on the surroundings. Which one of the following statements best describes the heat exchange during this proce h-vb7a 3m i;4jab0fpzss?

  07.40: Which is not true of an isochoric process on an enclosed ideal g2h/l5 ijww8yf 53t ughas in which th wuiy jh5gl/28fh3t5we pressure decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible adiaba(x3y tod6krhfhi n*3 jr+w6b6tic process. The pressure and volume initially are given as P = 2.0 atm and V = 30 L.kj+d hnof 6txrwb3y3i(*r h66 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 -0q*-dvd( ris tfd-t.bzl( oq7kb 5tm 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 gase t-mfq.tk(s(d ozqr0lbit -d7-5 *vdb s 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 w/ q h/hyjiud3q )9-qvreversible processes performed 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). For which procd9hiv)hq3 q/jq w/-uyess(es) does the temperature of the gas decrease?

  16.48: From a given sta/,mm 3z vv(kdg:mrp zoqt1 )/ wvlr5/ute of P, V, and T for an ideal gas, which one of the following reversible processes has the most heat associatezv,rr/dvvm l ko/1wmqp/ (m5g)u:z3 td with it?

  04.45: Container A has a sample of moe*x*qwk :pn3k4uh: yi natomic 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 adiabaku :i*he3*k pyx:4nwq tic 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 temperatzbb;n03vnt; aj;cc6 pure T . Which of the following processes would result in the greatesc tb0v6jn;na p; zbc3;t amount of energy added to the gas from heat?

  13.48: Two identical samples of a monatol)mj3nd m ,.mbmic ideal gas are to undergo reversible processes. Which one of the following choices is a correct statement about the heat associated with the processed3 jl,bm)mm .ns?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling