Question

A Carbon dioxide fire extinguisher initially contains 5.5lbm of
CO_{2} gas. In “real life” the CO_{2} would not be
all gas, but for this problem assume that it is. The CO_{2}
gas has an initial pressure of 860psia and initial temperature of
+72^{o}F. Immediately after putting out a fire, it has a
final pressure of 100psia and a final temperature of
-30^{o}F. Assume ideal gas law behavior.

a) Show that the specific gas constant for CO_{2} gas is
approximately R=1131ft∙lbf/(slug∙R).

b) What is the initial density of the CO_{2} gas in the
fire extinguisher?

c) What is the initial mass of CO_{2} gas in slug?

d) What is the initial internal volume of the fire extinguisher?

e) Assume that the internal volume does not change. What is the
final mass-density of CO_{2} gas inside the fire
extinguisher (at 100psia, -30^{o}F)?

f) What is the final mass of CO2 gas inside the fire extinguisher? Give answer in both slug and in lbm.

Answer #1

A 18.0-L tank of carbon dioxide gas (CO2) is at a pressure of
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calculate the number of moles of gas in the tank. mol (c) Use the
periodic table to compute the molecular weight of carbon dioxide,
expressing it in grams per mole. g/mol (d) Obtain the number of
grams of carbon dioxide in the...

A 22.0-L tank of carbon dioxide gas (CO2) is at a
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(a) Calculate the temperature of the gas in Kelvin.
_______ K
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mol
(c) Use the periodic table to compute the molecular weight of
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______ g/mol
(d) Obtain the number of grams of carbon dioxide...

A stream of carbon dioxide (CO2) at 120 F and 100 psig is fed to
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i. Assuming ideal gas behavior, calculate the density (lbm/ft3) and
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ii. Is the ideal gas equation of state a good approximation for the
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A cylinder contains 0.200 mol of carbon dioxide (CO2) gas at a
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atm on the gas. The cylinder is placed on a hot plate and a 920 J
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What is the change in internal energy of the...

Exhaust gas from a combustion process is 70% Nitrogen, 15%
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A tank with a volume of 8.6 ft3 contains 5.36 lbmol of carbon
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Please provide the complete answer.

If a tender in a fire starter requires an ignition temperature
of 2500F, what is the compression ratio (inital volume over final
volume) needed to light the tender and what is the work required
for an initial mass of 8.7x10^-5 lbm?
use Rair = 53.35 (ft lbf)/(lbm R)

Carbon dioxide (CO2) gas is compressed at steady state from 0.8
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The CO2 flows through the compressor at a rate of 0.1 m3/s through
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A saturated solution of carbon dioxide in water contains 3.00 g
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Carbon dioxide, which is recognized as the major contributor to
global warming as a "greenhouse gas," is formed when fossil fuels
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1. Assuming ideal gas behavior, 1.00...

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