Cold Room Pressure

[Aik]

Exactly, that's why I said "UNLESS the room is air-tight".

Sorry, don't see "UNLESS"

some youngsters are so eager to replay that they don't take the time to read the questions fully.

they are young and still learning, we have to forgive them.

icecube51, thanks for yours understanding.

I did some calcualtion and found out the cold air(-20 deg C) density is higher than normal air (33 deg C) density... hence the cold room air pressure is greater than atmospheric pressure (14.7 Psia).

Besides density also there is temperature of air... Check your calculations...