Question

A ball has a volume of 5.27 liters and is at a temperature of 27.0°C. A pressure gauge attached to the ball reads 0.25 atmosphere. The atmospheric pressure is 1.00 atmosphere.
Calculate the absolute pressure inside the ball and the amount of air it contains.
The absolute pressure inside the ball is ??? atmospheres
The ball contains ???mole of air

Answer 1

The absolute pressure inside the ball is 1.25atm.

Explanation:

Given-

Volume, V = 5..27L

Temperature, T = 27°C

Gauge Pressure, Pg = 0.25 atm

Atmospheric pressure, Patm = 1 atm

Absolute pressure, Pabs = ?

We know,

$Pabs = Pg + Patm\\\\\\Pabs = 0.25 + 1 atm\\\\Pabs = 1.25atm$

Therefore, absolute pressure inside the ball is 1.25atm.