Answer:

Explanation:
Pressure at the bottom of the building and at the top of the building must be related as



now we will have




now we have


The gas is in a rigid container: this means that its volume remains constant. Therefore, we can use Gay-Lussac law, which states that for a gas at constant volume, the pressure is directly proportional to the temperature. The law can be written as follows:

Where P1=5 atm is the initial pressure, T1=254.5 K is the initial temperature, P2 is the new pressure and T2=101.8 K is the new temperature. Re-arranging the equation and using the data of the problem, we can find P2:

So, the new pressure is 2 atm.
F=m*a
F=65 kg *9.8 m/s^2
F=637 N (Newtons) — this is the weight
A metallic bond would be formed
Potential energy which is the stored energy an object has waiting to be used