A gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 k. what will be the gas pressure when the temperature changes to 450 k? a gas contained in a steel tank has a pressure of 1.5 atm at a temperature of 320 k. what will be the gas pressure when the temperature changes to 450 k? 1.5 atm 0.47 atm 0.94 atm 2.1 atm 1.1 atm