Question

You place air in a sealed can at standard temperature and pressure (stp). you heat it to four times its absolute temperature (k) while leaving the volume constant. what happens to the pressure?

Answer 1

By Gayle-Lussac's law, the pressure and temperature of a fixed volume and amount of gas is directly proportional.
Thus,

P/T = constant

So if the temperature is increased four times, the pressure is also increased four times.