Steam expands in a turbine steadily at a rate of40,000 kg/h, entering at 8 MPa and 500C and leaving at 40kPa as saturated vapor. If the power generated by the turbineis 8.2 MW, determine the rate of entropy generation for thisprocess. Assume the surrounding medium is at 25C.

Q: A 100-lbm block of a solid material whose specific heat is 0.5 Btu/lbmR is at 80∘  ∘  F. It is…

A:

Q: Find the total change in entropy if 2kg2kg of ice at 0.00∘C0.00∘C is mixed with 25.0kg25.0kg of…

A: Ice of mass m1=2kg at temperature T1=0 C=273 K is mixed with water of mass m2=25kg at temperature…

Q: A 70.0-kg log falls from a height of 25.0 m into a lake. If the log, the lake, and the air are all…

A:

Q: Suppose 1.99 kg of water at 16.6°C is mixed with 1.36 kg of water at 79°C. After equilib- rium is…

A: Data Given.  m1 = 1.99 kg  T1 = 16.6°C = ( 273 + 16.6 ) K = 289.6 K  m2 = 1.36 kg T2 = 79°C = ( 273…

Q: Three hundred thirty grams of water at 0°C is brought into contact into thermal equilibrium…

A:

Q: A standard basketball has a mass of 1.4 pounds. This basketball is lifted (3 + y/20) ft above the…

A: Write the given values of this problem. m=1.4 poundsm=1.4×0.45359237m=0.635 kgh=3+y20…

Q: state, the piston is free to move. Now air at 500 kea and 70°C is allowed to enter the cylinder from…

A: Formula as, ∆S=change in entropy V2=Final volume V1=Initial volume N=No. of moles of air

Q: A mixture of ice and water, initially at 0◦C, poured into 50.0 g aluminum cup, initially at 30.0 ◦C.…

A: Given: T1=0oC=0+273 T1=271K T2=30oC=30+273 T2=303K m=50.0g Atomic mass of aluminium is 27 g/mol So…

Q: By how much does the entropy of 1.0 kg of water change when heated from 263.15 K up to 283.15 K at a…

A:

Q: 25 g of methane at a temperature of 250 K and a pressure of 185 kPa was expanded isothermally until…

A: Temperature =250 k Initial pressure =185 kPa Final pressure =2.5 kPa Mass =25 g No of moles=…

Q: Compute the change in entropy for an ideal dry gas of mass M which is heated at constant volume from…

A: The expression for the entropy is,

Q: nd 70°C is allowed to enter the a supply line until the volume rcent. Using constant specifi h

A: The entropy generation is calculated as, sgen=m2(s2-si)-m1(s1-si)…

Q: A 0.40-m3 insulated piston-cylinder device initially contains 1.3 kg of air at 30°C. At this state,…

A: Express the energy balance equation for the closed system. ∆Ein-∆Eout=∆Esystem where, ∆Ein is energy…

Q: An insulated piston-cylinder device contain 8L of saturated liquid water at a constant pressure of…

A:

Q: In an experiment, 180 gof aluminum (with a specific heat of 900 kgK) at 520Cis mied with 73.0g of…

A:

Q: A piston/cylinder contains air assumed to be an ideal gas at 800 kPa and 300 K. The gas undergoes…

A: a) According to first law of thermodynamics dQ = dU + PdV  Since the process is isothermal  dU = 0…

Q: A) Ikg of air at 10bar and 125 ° C receives heat at constant pressure until its temperature become…

A: Let Pressure, temperature and entropy be denoted be as P, T and S. The subscript in each of these…

Q: 20 g copper at 40 degree celsius is dropped into a constant volume calorimeter containing 100 g…

A:

Q: The compressor captures 1 m³ of air at a temperature of 293.15 K and a pressure of 1 bar and…

A: solution is given by

Q: A 1.0 mole sample of a “monatomic” ideal gas undergoes a reversible isobaric expansion from Vi to…

A: The change in entropyΔS of the gas.given,no. of moles=1Initial volumeVi=Vifinal…

Q: For a reaction of conversion of ATP into ADP at 20⁰C, calculate the reaction Gibbs free energy.…

A: Here,  We have,Enthalpy ∆H =20.27 KcalEntropy ∆S = 85 cal/KelvinT =20°C =273+20 =293 K

Q: Calculate the change in entropy on converting a mole of a gas occupying 20 liters at a pressure of 2…

A: Given data: Pressure of state 1 P1=2×105 N/m2. Volume of state 1 V1=20 liters. Pressure of state 2…

Q: How much water vapor with a temperature of 373.15 K must be brought to 5 kg of ice with a…

A: Given Temperature of water vapour is 373.15 k Mass of vapour is m Mass of ice is 5kg. Temp of ice is…

Q: tate, the piston is free to r Ra and 70°C is allowed to rom a supply line until the

A: given: The initial volume of the air is V1=0.40 m3. The final volume of the air is V2=V1+50%of V1m3…

Q: One kilogram of water at the 1 atn boiling point (100°C) is heated until all the water vaporizes.…

A: The heat is given by  H = m LV where, m is the mass and Lv is the latent heat of vaporization.

Q: Ques 2 po (CLO-6J Superheated water vapor enters an irreversible adiabatic turbine at 5 MPa and 500…

A:

Q: Two constant-temperature reservoirs are kept in thermal contact with a 1.00 kg aluminum bar. One…

A: This problem can be solved using the formula for change in entropy.

Q: allowed to enter the cy he until the volume inci g constant specific hea

A: To find the entropy generation using the given values as,

Q: inal temperature of the a with one mole of ß-Z ated during the process.

A: Mass of one mole of Fe = MFe = 56 g   = 0.056 kgSpecific heat of Fe = CFe = 462 J/ Kg0 CMass of…

Q: QUE STION FOUR: A light bulb operates at a temperature of 4,300 K and has an emissivity of 0.800 and…

A: Given, Temperature, T=4300K Area, A=5.5×10-6m2 Mass, m=2×10-3kg Initial Temperature, Ti=-30°C Final…

Q: Determine the velocity of the steam at the exit, in ft/s, and the rate of entropy production, in…

A:

Q: A spontaneous exothermic reaction at a constant temperature and pressure of 50•C and 2.0 atm has an…

A: The pressure in the reaction is given as, P=2 atm. The constant temperature is given as, T=50oC (or)…

Q: A 91.1 kg log falls from a height of 23.9 m into a lake. If the log, the lake, and the air are all…

A: Convert the temperature from degree Celsius to Kelvin.

Q: A 1.10-kg iron horseshoe is taken from a forge at 880°C and dropped into 3.00 kg of water at 15.0°C.…

A: As no energy is lost, so…

Q: 50g of water at 60oC is transferred to a pan and evaporated to dryness at 100oC at constant…

A: Convert the temperature of the water from degree Celsius to Kelvin. And,

Q: A 14 g sample of nitrogen gas (N2) at 298 K and 1.0 bar doubles its volume. Calculate the entropy…

A: Given: The mass of the sample of Nitrogen is m = 14 g At 298 K, the sample doubles its volume Vf = 2…

Q: A 1.00-kg iron horseshoe is taken from a forge at 900°C and dropped into 4.00 kg of water at 10.0°C.…

A:

Q: A glass of 450.0 g water at 20°C is chilled using a 20.0 g icecube at 0°C. Assume that the mixing…

A:

Q: A tank of 100-g liquid water at 100°C is put in thermal contact with another tank of 300-g water at…

A: mass of water in first tank = 100 g Initial temperature of water in first tank = 100oC mass of water…

Q: system. ciron= 448 J/kg. °C. determine the total entropy change of the horseshoe-plus-water Assuming…

A: Given data: The mass of iron is mi=1 kg. Temperature of iron is Ti=900°C. Temperature of water is…

Q: You plan to build a factory with its own power generator operating on the Carnot cycle to generate…

A: The power generated by Carnot cycle (Wout) = 35 MW Thermal efficiency(Ƞ) = 95 % Temperature = 250 C…

Q: An ideal gas is taken through a Carnot cycle.  The isothermal expansion occurs at 250oC, and the…

A: Given, Th(Temperature of the hot reservoir)=250°C=250+273=523K Tc(Temperature of the cold…