C. Ar or Argon
<span>It is the most commonly used gas between thermal window panes. Argon has 34% lower thermal conductivity than air and is therefore more suitable to be used instead of air. It is also inert and does not react or causes any form of harm.</span>
P1V1=P2V2
When the T is held constant and the V is decreased the P will increase.
P1/T1=P2/T2
As the V is held constant and T is increased P will definitely decrease
It is greater than the total mass of the products