Question

The pressure gage on a 2.5-m3 oxygen tank reads 500 kPa. Determine the amount of oxygen in the tank (mass in kg) if the temperature is 28°C and the atmospheric pressure is 97 kPa.

Answer 1

`n=5.36kg`

Step-by-step explanation:

From the question we are told that:

Volume
`V=2.5m^3`

Pressure
`\rho=500Kpa`

Temperature
`T=28^o`

Atmospheric pressure
`\rho_(atm) =97 kPa.`

Generally the equation for an Ideal gas is mathematically given by

`PV=nRT`

Therefore

`n=(500*2.5)/(8.314*28)`

`n=5.36kg`