Table6.5 Properties ofsome common gasesat 300KRGas(kJ/kg K)(kJ/kmol K)(kg/kmol)(kJ/kg K)DiatomicCarbon monoxide (CO)Hydrogen (H2)Nitrogen (N2)Oxygen (O2)0.29681.041014.32301.04000.918220.84520.56120.81921.06828.0102.01628.01331.9990.74421.39929.15828.87529.13429.3824.12430.29680.259810.19871.4041.3991.3950.74320.6584MonatomicArgon (Ar)Helium (He)0.520312.47212.47339.9500.20812.07710.31221.6661.66620.78620.7885.19303.11594.003TriatomicCarbon dioxide (CO2)Sulphur dioxide (SO2)0.84570.656837.2191.2881.25228.90644.0100.18890.64480.515041.30632.99164.0600.1298HydrocarbonsEthane (C,H6)Methane (CH,)Propane (C,Hg)1.49031.71321.76681.18653.12835.79574.57844.81327.48066.26330.0700.27652.23161.69151.3031.12616.0400.51840.18861.502944.090 4. A mass of 0.05 kg of carbon dioxide (molar mass 44 kg/kmol), occupying a volume of 0.03m³ at 1.025 bar, is compressed reversibly until the pressure is 6.15bar. Calculate the finaltemperature, the work done on the CO2, and the heat supplied:i)1.4= constantwhen the process is according to a law pvii) when the process is isothermaliii) when the process takes place in a perfectly thermally insulated cylinder.Use Cp of CO2 as 939 J/kgK, which is the cp at 400K as per tables of properties page 17.

Answered: Image /qna-images/answer/ccf88d77-b7c9-444e-b28b-6926d632145e.jpg

4. A mass of 0.05 kg of carbon dioxide (molar mass 44 kg/kmol), occupying a volume of 0.03 m3 at 1.025 bar, is compressed reversibly until the pressure is 6.15bar. Calculate the final temperature, the work done on the CO2, and the heat supplied: i) 1.4 pv when the process is according to a law ii) when the process is isothermal iii) when the process takes place in a perfectly thermally insulated cylinder. Use Cp of CO2 as 939 J/kgK, which is the cp at 400K as per tables of properties page 17. = constant

4. A mass of 0.05 kg of carbon dioxide (molar mass 44 kg/kmol), occupying a volume of 0.03 m3 at 1.025 bar, is compressed reversibly until the pressure is 6.15bar. Calculate the final temperature, the work done on the CO2, and the heat supplied: i) 1.4 pv when the process is according to a law ii) when the process is isothermal iii) when the process takes place in a perfectly thermally insulated cylinder. Use Cp of CO2 as 939 J/kgK, which is the cp at 400K as per tables of properties page 17. = constant

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Question

Table
6.5 Properties of
some common gases
at 300K
R
Gas
(kJ/kg K)
(kJ/kmol K)
(kg/kmol)
(kJ/kg K)
Diatomic
Carbon monoxide (CO)
Hydrogen (H2)
Nitrogen (N2)
Oxygen (O2)
0.2968
1.0410
14.3230
1.0400
0.9182
20.845
20.561
20.819
21.068
28.010
2.016
28.013
31.999
0.7442
1.399
29.158
28.875
29.134
29.382
4.1243
0.2968
0.2598
10.1987
1.404
1.399
1.395
0.7432
0.6584
Monatomic
Argon (Ar)
Helium (He)
0.5203
12.472
12.473
39.950
0.2081
2.0771
0.3122
1.666
1.666
20.786
20.788
5.1930
3.1159
4.003
Triatomic
Carbon dioxide (CO2)
Sulphur dioxide (SO2)
0.8457
0.6568
37.219
1.288
1.252
28.906
44.010
0.1889
0.6448
0.5150
41.306
32.991
64.060
0.1298
Hydrocarbons
Ethane (C,H6)
Methane (CH,)
Propane (C,Hg)
1.4903
1.7132
1.7668
1.186
53.128
35.795
74.578
44.813
27.480
66.263
30.070
0.2765
2.2316
1.6915
1.303
1.126
16.040
0.5184
0.1886
1.5029
44.090

4. A mass of 0.05 kg of carbon dioxide (molar mass 44 kg/kmol), occupying a volume of 0.03
m³ at 1.025 bar, is compressed reversibly until the pressure is 6.15bar. Calculate the final
temperature, the work done on the CO2, and the heat supplied:
i)
1.4
= constant
when the process is according to a law pv
ii) when the process is isothermal
iii) when the process takes place in a perfectly thermally insulated cylinder.
Use Cp of CO2 as 939 J/kgK, which is the cp at 400K as per tables of properties page 17.

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