# How do you find the pressure of 214 moles air in a 25L scuba tank at 290 K?

$\text{20.38 atm}$
$\text{PV = nRT}$
$\text{P" = "nRT"/"V" = "214 mol × 0.0821 L atm / (mol K) × 290 K"/"25 L" = "20.38 atm}$