Enthalpy Calculations

So today we did some notes on enthalpy calculations. It is  a measure of the total energy of a thermodynamics system. It includes the internal energy. Which is the energy required to create a system, and the amount of energy required to make room for it by displacing its environment and establishing its volume and pressure. Delta H is the energy change in the reaction in the kJ/mole. The enthalpy of a system is defined as: H= U + pV

This is a video that will help u understand how to calculate Delta H in some enthalpy problems: http://www.youtube.com/watch?v=NoRg7eGfb9k