A constant specific heat ideal gas has a gas constant of 42.92 ft·lbf/(lbm·R) and a constant pressure specific heat of 0.200 Btu/(lbm·R). Determine the heat transferred and the change of total entropy if 9.00 lbm of this gas is heated from 40.0 °F to 340 °F in a rigid container.
A constant specific heat ideal gas has a gas constant of 42.92 ft·lbf/(lbm·R) and a constant...
Question 3 9 pts A gas has a specific heat at constant pressure of c-0.490 Btu/lb Btu/lbm. R. Determine the molecular weight of this gas R and a specific heat at constant volume of c 0270 MW 1545 R-cJ (k-1)
Question 3 9 pts A gas has a specific heat at constant pressure of c-0.490 Btu/lb Btu/lbm. R. Determine the molecular weight of this gas R and a specific heat at constant volume of c 0270 MW 1545 R-cJ (k-1)
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change of entropy per pound of air (b) If the air was cooled from 1200° R to 540° R while the pressure drops from 50 lbf/in2 to 40lbf/in2 what does it say about the system entropy? Does the result violate the entropy increase principle?
3. Air...
The specific heat at constant pressure (Ep) of H2 at a temperature of 2000 F has a value of 32 (Btu/lbm mole R). What will be the value of K, where K cp/cy. Do not use graphs in the book. Assume ideal gas.
4. An ideal gas with constant specific heats undergoes a process from an initial pressure of 50 kPa and initial specific volume of 4 m^3/kg to a final pressure of 80 kPa and final specific volume of 5 m^3/kg. The mass of the carbon monoxide is 3 kg. The gas has a molar mass of 44 kg/kmol and a specific heat at constant volume of 0.98 kJ/(kg∙K). Determine the entropy change of the gas during the process in kJ/K.
2. (5 Points) 3-kg of air (an ideal gas) is heated in a piston-cylinder device from 17°C to 117°C at a constant pressure of 100 kPa. Determine the entropy change in kJ/K, assuming: a. Constant specific heat. b. Variable specific heat.
Consider steady flow of gas in a constant diameter pipe. Explain why the density decrease from inlet to outlet. (2pts) 15 lbm of Trichlorofluoromethane at 50 Psia and-10 °F held in a rigid container is heated to 50 F. Determine the final pressure and volume of the container. (ALL WORK MUST BE IN ENGLISH UNITS). (4 pts) .
Consider steady flow of gas in a constant diameter pipe. Explain why the density decrease from inlet to outlet. (2pts) 15 lbm...
Air initially at 120 psia and 500*F is expanded by an adiabatic turbine to 15 psia and 200* F. Assuming air can be treated as an ideal gas and has variable specific heat. a) Determine the specific work output of the actual turbine (Btu/lbm). b) Determine the amount of specific entropy generation during the irreversible process (Btu/lbm R). c) Determine the isentropic efficiency of this turbine (%). d) Suppose the turbine now operates as an ideal compressor (reversible and adiabatic)...
IDEAL GAS with Compressibility Factor Z correction Problem 2) Find the specific volume of the gas in Problem 1A(=1.48ft^3/lbm) using the compressibility factor Z. IDEAL GAS STATE Problem 1) Air is at 200F and a pressure of 50 psia. Assuming ideal gas estimate the specific volume of this air at this condition. Air at a density of 1.2 kg/m3 is at a pressure of 150 Kpa. Find the temperature of the air assuming ideal gas. Find the specific volume of...
A 2.00 mol sample of an ideal gas with a molar specific heat of CV = 5 2 R always starts at pressure 1.50 ✕ 105 Pa and temperature 250 K. For each of the following processes, determine the final pressure (Pf, in kPa), the final volume (Vf, in L), the final temperature (Tf, in K), the change in internal energy of the gas (ΔEint, in J), the energy added to the gas by heat (Q, in J), and the...
Nitrous oxide (N2O) behaves as an ideal gas and has a heat capacity at constant pressure CP = 38.6 J/K∙mol. 4.2 moles of N2O initially at 298 K are heated at constant pressure until a final temperature of 358 K is reached. (a) Calculate the enthalpy change of N2O during that process. (b) Calculate the heat transfer Q during that process. (c) Calculate the work W performed during that process. (d) Calculate the change in internal energy ΔU during that...