Emptying a Tank with Torricelli's Law

How long does it take to empty a tank from a small opening at the bottom? We will derive Torricelli's law, which is an equation for the velocity of fluid flow from a small hole in a large tank, and then we will use a volume balance to calculate how long it will take for the tank to empty. This is a common type of problem in Chemical Engineering Mass Balances or Thermodynamics. 00:00 Intro 00:58 Torricelli's Law 04:57 Volume Balance