Answer is: 245 kPa.
1 atm = 101.325 kPa.
p = 2.42 atm; the pressure of the gas.
p = 2.42 atm · 101.325 kPa/atm.
p = 245.20 kPa.
Atmospheric pressure (atm) is the force per unit area by the weight of air above that point.
Kilopascal (kPa) is a metric system pressure unit and equals to 1000 force of newton per square meter.
