A gas has a pressure ot 34200 mmHg at an unknown temperature. When the pressure inside of the tank is reduced to l 1400 mmHg and has a temperature of 35 C. What was the original temperature of the gas inside of the tank?
The quoted units of pressure are absurd. From where are you getting them?
So, to your problem, we have a starting pressure of,
And an end pressure of,
Using Charles' Law,
I reiterate that the question is highly suspect, and the units are physically impossible.