# How many moles of gas are present in a gas cylinder at 18*atm at a temperature of 123 ""^@C?

May 7, 2017

Approx. $25 - 30 \cdot m o l$

#### Explanation:

From the Ideal gas equation............

$n = \frac{P V}{R T} = \frac{18.4 \cdot a t m \times 50.0 \cdot L}{0.0821 \cdot L \cdot a t m \cdot {K}^{-} 1 \cdot m o {l}^{-} 1 \times 400 \cdot K} =$

??"moles". What mass does this represent?

I really would speak to the caretaker, if he is letting compressed gas cylinders get that hot.......he deserves a beat-down.