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- QUICKLY AND CORRECTLY PLEASE Two vessels A and B of different sizes are connected by a pipe with a valve. Vessel A contains 140 L of air at 3000 kPa, 90oC. Vessel B, of unknown volume, contains air at 70 kPa, 5oC. The valve is opened and, when the properties have been determined, it is found that pm = 1400 kPa, tm = 45oC. (a) What is the mass in kg of air initially inside vessel A (b) What is the volume of vessel B in liters?A piston cylinder contains 0.64 kg of air initially at 450 kPa and 225 °C, now the air expands in a process such that the pressure is linearly decreasing with volume to a final state of 125 kPa and 25°C. Determine the amount of work during this process (kJ). a. 94.63 b. 54.92 c. 67.45 d. 79.67 e. Not listedUse steam tables. 3 kg of wet vapor, having a quality of 33% expands at a constant pressure of 5.6 MPa inside a piston-cylinder. After the process the temperature of the steam is now 450°C. Determine the following: a. Work (kJ) b. Heat transfer (kJ) c. Change in Entropy (kJ/K)
- 1. A perfect gas has a value of R = 58.8 ft.lb/lb. R and k= 1.26. If 20 Btu are added to 5 lb of this gas at constant volume when the initial temperature is 90°F, find (a) T₂, (b) AH, (c) AS, (d) AU, and (e) work for a nonflow process.1. Three kilograms of neon in a constant volume system. The neon is initially at 550 kPa and 350 K. Its pressure is increased to 2000 kPa by a paddle work with 210 kJ of heat added. Find (a) the final temperature, (b) the change in internal energy, (c) the change in enthalpy, (d) the nonflow work. 2. An ideal gas with Cv = 1.62 kJ/kg-K and R = 273J/kg-K expands from 0.15 m3 and 27oC to 0.35 m3 during an isobaric process with p = 150kPa. Consider the process reversible nonflow, determine (a) the heat, (b) the change in internal energy, © the work nonflow, (d) the change in entropy. 3. A perfect gas with R = 320 J/kg-K and Cp = 1.6 kJ/kg-K. If 150 kJ of heat is added to 5 kg of this gas at constant pressure when t1 = 35 deg.C, find (a) the work nonflow, (b) U, (c)S. 4. Three kilograms of an ideal gas with R = 204 J/kg-K and k = 1.667 have 316 kJ of heat added during an isobaric process. The initial temperature is 38oC. Determine (a) Wnf, (b) U, (c) S. 5. During an isothermal…An Isobaric process is done on steam where it is heated to 200 C at 1.1 MPa. It was initially a kilogram of saturated liquid. Find the change in volume, change in internal energy, change in enthalpy, and change in entropy. (0.1848 m3, 1837.31 kJ, 2040.66 kJ, 4.4609 kJ/k) Table 3. Vapor p(t Sat.) 1.10 (184.09) 1.15 (186.07) 10 10 . Sat. 177.53 2586.4 2781.7 6.5535 170.13 2587.7 27833 6.5381 175 180 185 190 195 172.50 2567.9 2737.6 L75.28 25782 2771.0 178.02 2588.2 2784.0 180.71 2598.1 2796.9 183.36 2607.8 2809.5 6.6137 164.20 25648 2753.6 166.91 2573.2 2767.2 169 37 258SS 2780.5 172.18 2595.5 2793.5 174.75 2605.4 2806.4 6.4726 6.3028 63320 6.5603 6.5878 6.5004 63300 6.5587 6.5866 200 205 210 215 220 185.97 2617.4 2822.0 6.6401 188.56 2626.8 2834.2 6.6659 191.11 2636.1 2846.3 6.6911 193.63 2645.3 2858.3 6.7157 196.13 2654.3 2870.1 6.7398 177.28 2615.1 2819.0 179.77 2624.6 2831.4 182.24 2634.0 2843.6 184.68 2643.3 2855.7 187.09 2652.5 2867.6 6.7154 6.6146 6.6407 6.6661 6.6910 225 230 235…
- (Processes of ideal gases) oxygen at 200 kPa, 27 degree celcius in a piston cylinder device arrange to maintain a constant pressure. how much work in KJ/kg is produced by this system when it is heated to 227 degree celcius?A substance initially at 290kPa, 8 m³ is expanded to 37 m³ at in a process where PVn=const., n = 1.19. Determine the final pressure (in kPa)The tank of a leaky air compressor originally holds 90 L of air at 33deg C and 225 kPa. During a compression process, 4 grams of air is lost; the remaining air occupies 42 L at 550 kPa. What is the temperature of the remaining in air in degree centigrade.
- 5. A copper calorimeter can with mass 0.446 kg contains 0.0950 kg of ice. The system is initially at 0.0 C. (a) If 0.0350 kg of steam at 100.09C and 1.00 atm pressure is added to the can, what is the final temperature of the calorimeter can and its contents? (b) At the final temperature, how many kilograms are there of ice, how many of liquid water, and how many of steam? 6. The operating temperature of a tungsten filament in an incandescent light bulb is 2450 K, and its emissivity is 0.350. Find the surface area of the filament of a 150-W bulb if all the electrical energy consumed by the bulb is radiated by the filament as electromagnetic waves. (Only a fraction of the radiation appears as visible light.)Q4) A) What is the difference between R and Ru and how these two are related. B) What is the difference between the first and second law? Explain. Q5: A quantity of air occupies a volume of 30 L at a temnperature of 38°C and a pressure of raised isentropically until the volume becomes 6 L. . The temperature of the air 2KN/m 104Find the final temperature, the external work, change in internalI need help with the steps of this practice problem. Can I get help to solve it ? A piston cylinder device contains 0.8 kg of air initially at 100 kPa, 27 °C. The air is now compressed slowly in a polytropic process during which PV1.3=constant, until the volume reaches 1/2 its original volume. The system is then heated at constant pressure until the volume gets back to its original value. NOTE: THIS IS NOT A CYCLE. Data: Rair = 0.287 kJ/kg K; Cv=0.731 kJ/kg K; Cp=1.018 kJ/kgK. a) DeterminetheamountsANDdirectionsoftheWorkandHeat(each in kJ) for each of the two processes. SHOW ALL WORK used to get your values. b) Sketch the two processes on a P-v diagram, clearly showing all three state points and the two processes with their directions.