Calculate Volumic Flow Rate for Air (kg/s) at 1 bar, 20 - 50°C

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Erdo
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Hey guys,
can some of ou help me with this question:
I need to calculate the volumic flow rate for air by using the ideal gas law. Things i know from the assignment:

molarmass = 28,96 kg/kmol
Pressure = 1 bar
mass flow = 2 kg/s
t in = 20 degrees celsius
t out = 50 degrees celsius
(sorry for bad english, from denmark)
 
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From the ideal gas law, what is the density of the air at 20C? what is the density of the air at 50C?

Chet
 
Chestermiller said:
From the ideal gas law, what is the density of the air at 20C? what is the density of the air at 50C?

Chet
well jeg think it's 1000 kg/m^3, because nothing else is given.
 
Erdo said:
well jeg think it's 1000 kg/m^3, because nothing else is given.
That's some pretty dense air. A cubic meter of a-i-r has a mass of 1000 kg? Are you sure?
 
Erdo said:
well jeg think it's 1000 kg/m^3, because nothing else is given.
That's the density of water, not air. You need to use the ideal gas law to get the density of air under the process conditions.

Chet