Answer:
The initial pressure was 852.27 torr.
Explanation:
Given that,
Initial temperature, T = 315 K
Final temperature, T' = 231 K
Final pressure, P' = 625 torr
We need to find the initial pressure of the gas. We know that, the relation between pressure and temperature is given by :
[tex]\dfrac{P}{P'}=\dfrac{T}{T'}\\\\P=\dfrac{P'T}{T'}\\\\P=\dfrac{625\times 315}{231}\\\\P=852.27\ torr[/tex]
So, the initial pressure was 852.27 torr.