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## Homework Statement

A cylinder of nitrogen is pressurised to 200 BAR at 25oC

The cylinder is left to cool outside on a winters day to –5oC

What is the pressure of the Nitrogen once it has cooled?

## Homework Equations

P1/T1=P2/T2 ?

## The Attempt at a Solution

25+273 = 298 Kelvin. 273-5=268 Kelvin.

200/298=0.6711409396

0.6711409396 x 268 = 179 BAR ?

Have i used the relevant equation? Going through some practice questions but cant find the solutions. doh.

cheers