Question

If the absolute pressure of a gas is 550.280 kPa, its gage pressure is A. 101.325 kPa. B. 651.605 kPa. C. 448.955 kPa. D. 277.280 kPa.

Answer 1

Option C is the correct answer.

Step-by-step explanation:

Absolute pressure is sum of gauge pressure and atmospheric pressure.

That is

`P_(abs)=P_(gauge)+P_(atm)`

We have

`P_(abs)=550.280 kPa\\\\P_(atm)=1atm=101325Pa=101.325kPa`

Substituting

`P_(abs)=P_(gauge)+P_(atm)\\\\550.280=P_(gauge)+101.325\\\\P_(gauge)=448.955kPa`

Option C is the correct answer.