Table 3.1: Gas Constants and Specific Heats for Several Gases at Low Pressures and 300 K Cp Btu/lbm-R| kJ/kg-«K R ft-lb:/lbm-°R GAS M k kJ/kg--K Air 28.97 1.400 1.0035 0.2397 0.2870 53.34 Argon, Ar 39.95 1.667 0.5203 0.1243 0.2081 38.68 Carbon Dioxide, CO2 44.01 1.289 0.8418 0.2010 0.1889 35.11 Helium, He 4.003 1.667 5.1926 1.2402 2.0770 386.01 Hydrogen, H2 2.016 1.409 14.209 3.3936 4.1242 766.49 Methane, CH4 16.04 1.299 2.2537 0.5383 0.5184 96.34 Nitrogen, N2 28.01 1.400 1.0416 0.2488 0.2968 55.16 Octane, CaH18 114.2 1.044 1.7113 0.4087 0.0728 13.53 Охудen, O? 32.00 1.393 0.9216 0.2201 0.2598 48.28 Steam, H20 18.015 1.327 1.8723 0.4472 0.4615 85.77 Four tanks are sitting on a welder's bench. All are identical and are sized at 2. ft3. One is empty, another has hydrogen in it, another has oxygen, and anothe contains methane gas. It is unknown which cylinder has which gas, but each has weight (gross weight of cylinder and gas) and pressure given below. Find what is each cylinder. The surrounding temperature is 70°F. Use atmospheric pressure 14.7 psia. Refer to Table 3.1 for the specific gas constant of each gas. Tank No. Weight (lbr) Pressure (psfg) 1 2 3 4 12.0 10.0 12.0 12.0 322,673 -2,117 18,340 38,706
Table 3.1: Gas Constants and Specific Heats for Several Gases at Low Pressures and 300 K Cp Btu/lbm-R| kJ/kg-«K R ft-lb:/lbm-°R GAS M k kJ/kg--K Air 28.97 1.400 1.0035 0.2397 0.2870 53.34 Argon, Ar 39.95 1.667 0.5203 0.1243 0.2081 38.68 Carbon Dioxide, CO2 44.01 1.289 0.8418 0.2010 0.1889 35.11 Helium, He 4.003 1.667 5.1926 1.2402 2.0770 386.01 Hydrogen, H2 2.016 1.409 14.209 3.3936 4.1242 766.49 Methane, CH4 16.04 1.299 2.2537 0.5383 0.5184 96.34 Nitrogen, N2 28.01 1.400 1.0416 0.2488 0.2968 55.16 Octane, CaH18 114.2 1.044 1.7113 0.4087 0.0728 13.53 Охудen, O? 32.00 1.393 0.9216 0.2201 0.2598 48.28 Steam, H20 18.015 1.327 1.8723 0.4472 0.4615 85.77 Four tanks are sitting on a welder's bench. All are identical and are sized at 2. ft3. One is empty, another has hydrogen in it, another has oxygen, and anothe contains methane gas. It is unknown which cylinder has which gas, but each has weight (gross weight of cylinder and gas) and pressure given below. Find what is each cylinder. The surrounding temperature is 70°F. Use atmospheric pressure 14.7 psia. Refer to Table 3.1 for the specific gas constant of each gas. Tank No. Weight (lbr) Pressure (psfg) 1 2 3 4 12.0 10.0 12.0 12.0 322,673 -2,117 18,340 38,706
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Transcribed Image Text:Table 3.1: Gas Constants and Specific Heats for Several Gases at Low Pressures
and 300 K
Cp
Btu/lbm-°R| kJ/kg-oK
R
ft-lb:/lbm-°R
GAS
M
kJ/kg--K
Air
28.97
1.400
1.0035
0.2397
0.2870
53.34
Argon, Ar
39.95
1.667
0.5203
0.1243
0.2081
38.68
Carbon Dioxide, CO2
44.01
1.289
0.8418
0.2010
0.1889
35.11
Helium, He
4.003
1.667
5.1926
1.2402
2.0770
386.01
Hydrogen, H2
2.016
1.409
14.209
3.3936
4.1242
766.49
Methane, CH4
16.04
1.299
2.2537
0.5383
0.5184
96.34
Nitrogen, N2
28.01
1.400
1.0416
0.2488
0.2968
55.16
Octane, CaH18
114.2
1.044
1.7113
0.4087
0.0728
13.53
Oxygen, O2
32.00
1.393
0.9216
0.2201
0.2598
48.28
Steam, H20
18.015
1.327
1.8723
0.4472
0.4615
85.77
Four tanks are sitting on a welder's bench. All are identical and are sized at 2.5
ft3. One is empty, another has hydrogen in it, another has oxygen, and another
contains methane gas. It is unknown which cylinder has which gas, but each has a
weight (gross weight of cylinder and gas) and pressure given below. Find what is in
each cylinder. The surrounding temperature is 70°F. Use atmospheric pressure of
14.7 psia. Refer to Table 3.1 for the specific gas constant of each gas.
Tank No.
Weight (lbr)
Pressure (psfg)
1
2
3
4
12.0
12.0
10.0
12.0
322,673
-2,117
18,340
38,706
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