5. A rigid tank of 1 m³ contains nitrogen gas (N2) at 600 kPa, 127 °C. By mistake someone let 0.5 kg of the gas flow out, the temperature dropped to 102 °C. MW = 28, k = 1.4 Determine the following a. The resulting pressure; 506.8259 kPa b. The remaining mass of N2 inside the tank. 4.5517 kg ME264 Problem Set 3 – Module 3; IDEAL GAS 6. Air in an internal-combustion engine has 440°F, 150 psia, with a volume of 3 ft. Combustion heats it to 2700°R in a constant-volume process. Determine the following: a. mass of air; 1.3498 lbm b. the final pressure; 450 psia c. the change in Enthalpy; 583.1052 BTU d. the heat transferred to the air; 416.434 BTU
5. A rigid tank of 1 m³ contains nitrogen gas (N2) at 600 kPa, 127 °C. By mistake someone let 0.5 kg of the gas flow out, the temperature dropped to 102 °C. MW = 28, k = 1.4 Determine the following a. The resulting pressure; 506.8259 kPa b. The remaining mass of N2 inside the tank. 4.5517 kg ME264 Problem Set 3 – Module 3; IDEAL GAS 6. Air in an internal-combustion engine has 440°F, 150 psia, with a volume of 3 ft. Combustion heats it to 2700°R in a constant-volume process. Determine the following: a. mass of air; 1.3498 lbm b. the final pressure; 450 psia c. the change in Enthalpy; 583.1052 BTU d. the heat transferred to the air; 416.434 BTU
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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b. If 20 kJ of heat is added at constant pressure determine the final temperature;
39.7535°C
nine, stored in a 2000-gallon tank is to be transferred in drums. Each drum is to be
2 of 2
i pressure of 20 psig and 90°F. The stored methylamine is initially at 50 psig and
drum = 55 gal; MW of methylamine is 31)
a. Total mass inside the tank; 90.8738 lbm
b. Mass inside each drum; 1.3402 Ibm
c. Number of drums that can be filled; 68 drums
5. A rigid tank of 1 m3 contains nitrogen gas (N2) at 600 kPa, 127 °C. By mistake someone let
0.5 kg of the gas flow out, the temperature dropped to 102 °C. MW = 28, k = 1.4
Determine the following
a. The resulting pressure; 506.8259 kPa
b. The remaining mass of N2 inside the tank. 4.5517 kg
ME264
Problem Set 3 – Module 3; IDEAL GAS
6. Air in an internal-combustion engine has 440°F, 150 psia, with a volume of 3 ft. Combustion
heats it to 2700°R in a constant-volume process.
Determine the following:
mass of air; 1.3498 lbm
b. the final pressure; 450 psia
c. the change in Enthalpy; 583.1052 BTU
а.
d. the heat transferred to the air; 416.434 BTU
7. 7 cu ft of air is compressed isothermally inside a compressor (T1 = T2) from a pressure of 70
psi to 300 psi.
Determine the following
a. The final volume of the air; 1.6333 ft3

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МЕ264
Problem Set 3 – Module 3; IDEAL GAS
Instructions: Show your complete solution. Upload a digital copy of your answer before the
deadline.
BOX YOUR FINAL ANSWER, ROUND UP TO 4 DECIMAL PLACES.
1. Propane (MW = 44 ; k = 1.13) initially at 30 psia and 215°F, is stored inside a large spherical
vessel having a diameter of 10 ft. If the temperature is increased to 635°F.
Determine the following:
a. Final pressure; 48.6667 psi
b. Mass of propane; 95.4339 Ibm
c. Constant Volume Specific heat; 0.3472 BTU/lbm.R
d. Change in Internal Energy, AU; 13915.6961 BTU
V1
2. Air at 2 bar and 50°C is compressed at a constant pressure. Compression ratio;
= 3
V2
Determine the following
a. T2; -165.3333°C
b. Heat transfer during the process; -216.6684 kJ/kg
3. Given: 500 grams of air at STP.
(STP or Standard Temperature Pressure; where in T = 0°C, Pabs = 1 atm).
Determine the following
a. Volume of the air; 0.3867 m³
b. If 20 kJ of heat is added at constant pressure determine the final temperature;
39.7535°C
4. Methylamine, stored in a 2000-gallon tank is to be transferred in drums. Each drum is to be
filled at a pressure of 20 psig and 90°F. The stored methylamine is initially at 50 psig and
90°F. (1 drum = 55 gal; MW of methylamine is 31)
a. Total mass inside the tank; 90.8738 lbm
b. Mass inside each drum; 1.3402 Ibm
c. Number of drums that can be filled; 68 drums
5. A rigid tank of 1 m3 contains nitrogen gas (N2) at 600 kPa, 127 °C. By mistake someone let
0.5 kg of the gas flow out, the temperature dropped to 102 °C. MW = 28, k = 1.4
Determine the following
a. The resulting pressure; 506.8259 kPa
b. The remaining mass of N2 inside the tank. 4.5517 kg
ME264
Problem Set 3 – Module 3; IDEAL GAS
6. Air in an internal-combustion engine has 440°F, 150 psia, with a volume of 3 ft. Combustion
heats it to 2700°R in a constant-volume process.
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