Problem 2.1E: Calculatethe work performed by a person whoexertsa force of 30 NN = newtonstomove abox 30metersif... Problem 2.2E: Explain inyour own words why work done by the system is defined as the negative of pV, not positive... Problem 2.3E: Calculate the work in joules when a piston moves from a volume of 50.00 mL to a volume of 450.00 mL... Problem 2.4E: Calculatethe work on the system whena piston is compressed by a pressure of 1780torr from 3.55 L... Problem 2.5E: Calculatethe work in joules needed to expanda balloon from5mL to 3.350 L against standard... Problem 2.6E: Consider exercise 2.5. Would the workbe more or less if it were performedagainstdifferent external... Problem 2.7E: Apistonhaving0.033 mol ofgas at 35.0Cexpands from0.77 Lto 2.00L.Calculate the work performed if... Problem 2.8E: A bottle of soda has a head space containing 25.0 mL of CO2 gas at 4.2 atm pressure when the soda is... Problem 2.9E Problem 2.10E: Calculate the specific heat of a material if 288J of energy were required to heat 50.5g of the... Problem 2.11E: There is 3930 J of energy added to a 79.8-g sample of H2 gas. By how much doesthe temperature... Problem 2.12E: If the heat capacity varies withtemperature, abetter form ofequation 2.9 isto solve q=TiTfnCT-t A... Problem 2.13E: Liquid hydrogen fluoride, liquid water,and liquid ammonia all have relatively high specific heats... Problem 2.14E: A 5-mmdiameter hailstone has a terminal velocity of10.0m/s. Assuming its mass is6.031025 kg and all... Problem 2.15E: A7.50-gpiece of iron at 100.0C is dropped into 25.0g of water at 22.0C. Assuming that the heat lost... Problem 2.16E: With reference to Joules apparatus inFigure2.6, assuminga massof 100.Kg ofwater about100L,a weight... Problem 2.17E Problem 2.18E: True or false: Althoughwork done bya free expansion is zero for an ideal gas, it is nonzero for a... Problem 2.19E: What arethe differencesbetween an open, a closed, and an isolated system?Describe an example of... Problem 2.20E: The statement Energycan beneithercreatednor destroyedis sometimes used as an equivalent statement of... Problem 2.21E Problem 2.22E: What is the change in internal energy when a gas contracts from 377mL to 119mLundera pressure of... Problem 2.23E: Calculate the work for the isothermal, reversible compressionof 0.245 moleof an idealgas going from... Problem 2.24E: Calculate the work donewhen 1.000 mole of an ideal gas expands reversiblyfrom 1.0L to 10L at 298.0K.... Problem 2.25E: Apistonhaving0.033 mol of gas at 35.0C expands from 0.77L to 2.00 L and the systemsimultaneously... Problem 2.26E Problem 2.27E: Indicate which state function is equal to heat, q, for each process described. a. The ignition of a... Problem 2.28E: The distance between downtown San Francisco and downtown Oakland is 9 miles. However, a car driving... Problem 2.29E: Is temperature astate function?Defend your answer. Problem 2.30E: A piston reversibly and adiabatically contracts 3.88 moles of ideal gas to one-tenth of its original... Problem 2.31E: Calculate U when 1.00 mol of H2 goes from 1.00 atm, 10.0 L, and 295 K to 0.793 atm, 15.0 L, and 350... Problem 2.32E: Many compressed gases come in large,heavy metal cylindersthat are so heavy that they need a special... Problem 2.33E: Under what conditions will U be exactly zero for a process whose initial conditions are not thesame... Problem 2.34E: Aballoon filled with 0.505 mole of gascontracts reversibly from 1.0L to 0.10 L ata constant... Problem 2.35E: A piston having 7.23 g of steam at 110 C increases its temperature by 35 C. At the same time, it... Problem 2.36E: It takes 2260 J to vaporize a gram of liquid water to steam at its normal boiling point of 100C.... Problem 2.37E: True or false: Any process for which H is negative is exothermic. Explain your answer. Problem 2.38E Problem 2.39E: A refrigerator contains approximately 17cubic feet, or about 480 liters, of air. Assuming it acts as... Problem 2.40E: In a constant-volume calorimeter, 35.0g of H2cools from 75.3C to25.0C. Calculate w, q, U, and H for... Problem 2.41E: A 2.50-mol sample of gas is compressed isothermally from 20.0 L to 5.00 L under a constant external... Problem 2.42E: A 244-g amount of coffee in an open plastic cup cools from 80.0C to 20.0C. Assuming no loss of mass... Problem 2.43E Problem 2.44E: Starting with equation 2.27 andthe original definitionof enthalpy, derive the fact that Cp-=Cv-+R Problem 2.45E: Derive the fact that HpT is also zero for an ideal gas. Problem 2.46E: Define isobaric,isochoric, isenthalpic,and isothermal. Can achangein a gaseous system be isobaric,... Problem 2.47E: Starting from the cyclicrule involvingthe Joule- Thomson coefficient, derive equation 2.35 Problem 2.48E: The ideal gas law is theequation of state for an ideal gas. Why cantit be used to determine TpH? Problem 2.49E Problem 2.50E: Estimatethe final temperature of a mole of gas at 200.00 atmand 19.0C as it is forced through a... Problem 2.51E: With regard to exercise 2.50, how accurate do you think your answer is, and why? Problem 2.52E: Use the data in Table 2.2 to determine Hp T for Ar at 0C and 1atm. Make any reasonable assumptions... Problem 2.53E: Use the data in Table 2.2 to determine PH T for N2 at 50C and 20atm. Make any reasonable assumptions... Problem 2.54E: Someone proposes thatthe Joule-Thomson coefficient can also be defined as UJT = UPTcv Is this... Problem 2.55E: Why is equation2.37 written interms of CV and Cp and not c-v and c-p ? Problem 2.56E: What are the numerical values of the heat capacities c-v and c-p of a monatomic ideal gas,in units... Problem 2.57E: In a constant-pressure calorimeter that is, one that expands or contracts if the volume of the... Problem 2.58E: What is the finaltemperature of0.122 mole ofmonatomic ideal gas that performs 75J of work... Problem 2.59E Problem 2.60E: Show that =5/3 for a monatomic ideal gas. Problem 2.61E Problem 2.62E Problem 2.63E: A 1.00 mol sample of H2 is carefully warmed from 22 K to 40 K at constant volume. a What is the... Problem 2.64E: Asampleof a monatomic ideal gas doubles itsvolume reversibly and adiabatically. By what percentage... Problem 2.65E: A sample of an ideal diatomic gas is compressed adiabatically and reversibly to double its initial... Problem 2.66E: In orbit about Earth, a weather balloonjettisons a weight andascends to a higher altitude. If the... Problem 2.67E Problem 2.68E Problem 2.69E: If pumping up an automobile tire is assumed to be adiabatic and reversible, what is the new... Problem 2.70E Problem 2.71E: Take the volume change into account and calculate H and U for exactly 1 g of ice melting into 1 g of... Problem 2.72E: How much work is performed by 1 mole of water freezing to 1 mole of ice at 0C at standard pressure?... Problem 2.73E: Why are steam burns so much worse than water burns even if the H2O is at the same temperature for... Problem 2.74E: How many grams of water at 0C will be melted by the condensation of 1 g of steam at 100C? Problem 2.75E: Draw a diagram like Figure 2.11 that illustrates the change in enthalpy for the chemical reaction C... Problem 2.76E: Determine the rxnH(25C) of the following reaction: H2(g)+I2(s)2HI(g) Problem 2.77E: Determine rxnH 25 C for the following reaction: NO g O2 g NO2 g This reaction is a major... Problem 2.78E: The enthalpy of combustion of buckminsterfullerene, C60, is -26,367kJ/mol. C60(s)+60O2(g)60CO2(g)... Problem 2.79E: The enthalpy of combustion of diamond is -395.4 kJ/mol. C s, dia O2 g CO2 g Determine the fH of C... Problem 2.80E: Using Hesss law, writeout allof the formation reactions that add up to, and calculate rxnH(25C) for,... Problem 2.81E: Sublimation is the phase change from solid to gas without going through a liquid phase. Solid CO2,... Problem 2.82E: The thermite reaction combines aluminum powder and iron oxide and ignites the mixture to make... Problem 2.83E: Benzoic acid, C6H5COOH, is a common standard used in bomb calorimeters, which maintain a constant... Problem 2.84E: Assume that 1.20 g of benzoicacid, C6H5COOH, is burned in a porcelain dish exposed to the air.If 31,... Problem 2.85E: Natural gas is mostly CH4. When it burns, the chemical reaction is CH4 g 2O2 g CO2 g 2H2O g The H... Problem 2.86E: Assuming constant heatcapacities for products and reactants,determine the H(500C) for... Problem 2.87E: Use the heat capacities of the products and reactants of the thermite reaction and the calculated H... Problem 2.88E: The following are values of heat capacity for nitrogen gas; Temp K Cv J/mol. K 300 20.8 400 20.9 500... Problem 2.89E Problem 2.90E Problem 2.91E: The Dieterici equation of state for one mole of gas is p=RTe-aVRTV-b Where a and b are constants... Problem 2.92E Problem 2.93E: Find the enthalpies of the combustion reactions for methane through n-octane. Plot them versus the... format_list_bulleted