Difficult# Determining the Expected Capacity of a Gas Cylinder

CHEM-WCQ6LK

A $50\text{ L }$ helium gas cylinder has a pressure of $750\text{ psi}$ at $298\text{ K}$. If the helium can be treated ideally, approximately how many $1.0\text{ L}$ balloons can be filled with the cylinder?

Assume the pressure inside each balloon is $1\text{ atm}$ and that the cylinder is evacuated completely.

$\left(1\text{ atm}=14.6959\text{ psi},R=0.0821\frac{L\times atm}{mol\times K}\right)$