1. Consider this item as ideal gas: A rigid tank containing 3 lb of gaseous mixture of nitrogen, helium and carbon dioxide, each 33.33 % by volume at 275.71 Kpaa, and 65.56 c receives 1 lb more of nitrogen with the temperature remaining at 65.56 c. For the resulting 4lb, determine (a) the gravimetric and volume analyses, (b) the pressure and (c) the molecular weight. Note; 2.2 lbm = 1 kgm For the initial mixture, determine (d) Cp, (e) Cv, and, (f) R
1. Consider this item as ideal gas: A rigid tank containing 3 lb of gaseous mixture of nitrogen, helium and carbon dioxide, each 33.33 % by volume at 275.71 Kpaa, and 65.56 c receives 1 lb more of nitrogen with the temperature remaining at 65.56 c. For the resulting 4lb, determine (a) the gravimetric and volume analyses, (b) the pressure and (c) the molecular weight. Note; 2.2 lbm = 1 kgm For the initial mixture, determine (d) Cp, (e) Cv, and, (f) R
1. Consider this item as ideal gas: A rigid tank containing 3 lb of gaseous mixture of nitrogen, helium and carbon dioxide, each 33.33 % by volume at 275.71 Kpaa, and 65.56 c receives 1 lb more of nitrogen with the temperature remaining at 65.56 c. For the resulting 4lb, determine (a) the gravimetric and volume analyses, (b) the pressure and (c) the molecular weight. Note; 2.2 lbm = 1 kgm For the initial mixture, determine (d) Cp, (e) Cv, and, (f) R
UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS LEGIBLY. SHOW THE STEP-BY-STEP PROCESS WITH SHORT COMMENT/EXPLANATION. ANSWER IN 3 DECIMAL PLACES.
ANSWER #2 ONLY!
Transcribed Image Text:2² = Z
Note: Use values of MW, Cp, Cv, etc., from the Tables provided below. Indicate your answers in this page.
Show your solutions in separate pages.
2. Consider this item as REAL gases:
Two hundred and fifty pounds of a mixture of 6.63.% propane
17.47% n-butane, and 75.9%-pentane is completely vaporized in a
pipe still in one hour. At the outlet, the temperature anc
pressure are 433 F: and 600 psia. What is the volumetric flow
rate in CFS at the outlet conditions? Above % data are Xi values.
Answer:
cubic feet per second
1.1
Answers: (b)
(c).
(e)
1.0
0.9
08
0.7
0.6
0.5
0.4
0.3
1. Consider this item as ideal gas: A rigid tank containing
3 lb of gaseous mixture of nitrogen, helium and carbon
dioxide, each 33.33 % by volume at 275.71 Kpaa,
and 65.56 C receives 1 lb more of nitrogen with the temperature
remaining at 65.56 c. For the resulting 4lb, determine (a) the
gravimetric and volume analyses, (b) the pressure and (c) the
molecular weight.
0.2
Note; 2.2 lbm = 1 kgm
For the initial mixture, determine (d) Cp, (e) Cv,
and, (f) R
Answers: a)
0.1
0
0.5
Gas
Nitrogen
Helium
Carbon
Dioxide
1.0
T=1.00
1.5
N₂
Formula
He
TR=1.10
CO₂
2.0
2.5
ADA
TR=1.20
0
4
28
44
x
(f)
3.0
(d)
TR = 2.00
T = 1.50
To = 1.30
MW
BAK
4.0
Reduced pressure PR
X
3.5
4.5
Density
(kg/m3)
1.1648
0.1663
1.8417
Legend:
X Methane
o Ethylene
■ Iso-pentane
• n-Heptane
A Nitrogen
Carbon dioxide
• Water
Average curve based on data on
hydrocarbons
▲ Ethane
o Propane
□n-Butane
5.0
5.5
R
(Gas
constant)
kJ/(kg.K)
0.297
2.078
I
6.0
0.189
The physical properties of the gas are:
6.5
Cp
kJ/(kg.K)
1.034
5.234
7.0
0.858
Tc
Pc
MW
Cv
kJ/(kg.K)
0.733
Propane
369.9 K
665.8 R
42.0 atm
3.153
0.66
44
3.
Determine the size of a spherical balloon required to lift a
payload of 1360 kg. The gas to be used is helium at 101.3 kPa
and 23°C. The surrounding air is at 1.012 bars and at 10 deg C.
Solution :
AIR
101.3 kPa
283 K
Cp/Cv=Y
1.41
1.66
Butane
425.17 K
765.31 R
37.47 atm
1.3
58
W₂
WAIR
101.3 kPa
296 K
Pentane
469.8 K
845.64 R
33.3 atm
WVPL
Answer: D=
72
m
Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.
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