In: Physics
this example is an application of Amonton's law/ Gay- lussac's law:
it states that pressure is directly proportional to temprature if volume and gas moles remain fixed.
Step 1: understand the given boundary conditions i.e. volume and moles remain fixed as box is sealed and rigid
Step2 : write the initial and final values of temprature and pressure (only initial.).
Step 3: apply ideal gas equation for both conditions (initial and final.)
Step 4: divide both equations to get condition for final pressure.
Step 5: put the values and do calculation.
The final answer is 2 atm