1. There are withdrawn 200 ft3 of air measured at 15 psia and 900F from a 50-ft3 tank containing air initially at 100 psia and 140oF. What is the pressure of the air remaining in the tank if its temperature is 1300F?

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1. There are withdrawn 200 ft3 of air measured at 15 psia and 900F from a 50-ft3 tank containing air
initially at 100 psia and 140oF. What is the pressure of the air remaining in the tank if its temperature is
1300F?
Ans: 33.96 psia
2. Two compressed gas cylinders are connected by a hose and isolation valve. Chamber #1 has a volume
of 5 ft3 and contains 2 Ibm. Chamber #2 has a volume of 10 ft3 and contains 1 Ibm. What is the specific
volume of the gas in chamber #1? What is the specific volume of the gas in chamber #2? After the valve
is opened, what is the specific volume of the gas?
Ans: v1+2= 5 ft3/lbm
Transcribed Image Text:1. There are withdrawn 200 ft3 of air measured at 15 psia and 900F from a 50-ft3 tank containing air initially at 100 psia and 140oF. What is the pressure of the air remaining in the tank if its temperature is 1300F? Ans: 33.96 psia 2. Two compressed gas cylinders are connected by a hose and isolation valve. Chamber #1 has a volume of 5 ft3 and contains 2 Ibm. Chamber #2 has a volume of 10 ft3 and contains 1 Ibm. What is the specific volume of the gas in chamber #1? What is the specific volume of the gas in chamber #2? After the valve is opened, what is the specific volume of the gas? Ans: v1+2= 5 ft3/lbm
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