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defon
3 years ago
12

The density of oxygen contained in a tank is 2.0 kg/m3 when the temperature is 25 °C. Determine the gage pressure of the gas if

the atmospheric pressure is 97 kPa.
Engineering
1 answer:
Verdich [7]3 years ago
8 0

Answer:

57.8408 kPa

Explanation:

Data provided in the question:

Density of oxygen contained, ρ = 2.0 kg/m³

Temperature, T = 25 °C = 25 +273 = 298 K

Atmospheric pressure = 97 kPa.

Now,

Pressure due to gas = ρRT

Here,

R is the gas constant = 259.8 J/kg.K

Thus,

Absolute Pressure due to oxygen = 2 × 259.8 × 298

= 154840.8 Pa

= 154840.8 × 10⁻³ kPa

= 154.84 kPa

Thus,

Gage pressure = Absolute Pressure - Atmospheric pressure

=  154.84 kPa - 97 kPa

= 57.8408 kPa

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