Question

Select the correct answer.

The gas in a sealed container has an absolute pressure of 125.4 kilopascals. If the air around the container is at

a pressure of 99.8 kilopascals, what is the gauge pressure inside the container?

A.1.5 kPa

B.24.1 kPa

C.25.6 kPa

D.112.6 kPa

E.225.2 kPa

Answer 1

Answer:

C. 25.6 kPa

Explanation:

The gauge pressure is equal to the difference between absolute pressure (gas) and atmospheric pressure (air):

$P_{g} = P_{abs} - P_{atm}$

$P_{g} = 125.4\,kPa - 99.8\,kPa$

$P_{g} = 25.6\,kPa$