By definition we have to:
[tex] Pabs = Patm + Pg
[/tex]
Where,
Pabs: absolute pressure
Patm: atmospheric pressure
Pg: gage pressure
The atmospheric pressure is constant and its value is:
[tex] Patm = 101.325 kPa
[/tex]
Then, by clearing gage pressure we have:
[tex] Pg = Pabs - Patm
[/tex]
Substituting values we have:
[tex] Pg = 550.280 - 101.325
Pg = 448.955 KPa
[/tex]
Answer:
If the absolute pressure of a gas is 550.280 kPa, its gage pressure is:
D. 448.955 kPa
