15.25: A gas undergoes the unusuqgu.k*icq9 piw nn)+7al 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 cylinder, lgo nwu; .61ujthe stream of gas feels cool. Thiso.6gl1j wunu; is because

  94.35: A gas can be taken from state g/k au;l2gu)v a to 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 doa u/glgu)kv;2ne by the system during a→b→c?

  06.26: In the Pressure versus Volume graph shown, in the proci;c )w( rh(ysvess of going from a to b 60 J of heat are added, and in the process of going from b to(;v cr)syi( wh 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 isothermally ldgox *1m8 +igj:m3hqcompressed:

  97.15: Which of the following is always true for an isotherp :+q(wkr ql,lhr *3cemal process of an ideal,r 3 q(we:hkr clqp+l* gas?

  13.31: A monatomic ideal gas undergoes a reversible isothermal expansion 61g*rex kbw64iuz/ip*z tqk/ in an enclosed container. Which one of the folt/ k1i* e* 6u4z/6 bkrzgqpxwilowing quantities associated with the gas has a value of zero?

  09.33: An ideal gas undergoes an isobaric expan+ jls2xwgnp32r/xc( hm v8*zr sion followed by an isochoric cooling. Which of the following statements must be true after the completion of these ps cxwxh 2+ngvz /lj* 2(3rp8rmrocesses?

  11.44: One mole of a monatomic ideal gas undergoes an isobaric expansion. In t ww awp 5c/mot6(h3,mdhe process, the temperature of the gadwhm w,3(wt/am56co ps 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 gasvt95m.) )vimez :tm* oimtq.b undergoes an isobaric process. During the process, the gas performs 80 joules of work on the surroundings. Which one of the following statementsmz5 i vo*vmt.m.qtb ):met)9i best describes the heat exchange during this process?

  07.40: Which is not true of an isochoric process on an enclosed ideal gas in wo/ +wzepj32mm1 f.mru hich the pressurw/ mz+.m13 re o2jmpfue decreases?

  15.47 One mole of a diatomic ideal gas undergoes a reversible ad rm:oo+).wav kiabatic process. The pressure and volume initially are given)o.: romwkv a+ 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 id tnm mh8ic *+:o7u)jhoentical 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 performe otm ujnh7:c h)mi*o+8d 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 differv yj1u5o,)z f2qo s w)yu5(q+x;k wnohent possible reversible 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 pruwy1(ufoo)5jn ;wk )s,+ qqozyhv x25ocess(es) does the temperature of the gas decrease?

  16.48: From a given stat0hj , 1t wd)cfggy1*qze of P, V, and T for an ideal gas, which one of the following reversible processes has the most heat associated wit wqfz)1dcy g*,hgjt01 h it?

  04.45: Container A has a sample e0oj tzt9s7 :eof monatomic ideal gas, while container B has a sample of diatomic ideal gas. The two gases start with the sam9oees:t0 jtz7e 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 , volume7d75 bhkjq/u x hm/ ,kdh37yhd V , and temperature T . Which of thej b7u 3k/x kqdhd7 h7h5/mhd,y following processes would result in the greatest amount of energy added to the gas from heat?

  13.48: Two identical samples of a monatoo0 - 9kex jhfdio03,inmic ideal gas are to undergo reversible processes. Which one of the following choices is a correct statement about td,3 ih0oe 0 kfx9n-ijohe heat associated with the processes?
Process 1: An isochoric pressure doubling
Process 2: An isobaric volume doubling