Calculating Balancing Numbers in Chemical Reactions and Limiting Reactants

The video tutorial explains the concept of relative formula mass and its application in chemical reactions. It uses two examples: the decomposition of hydrogen peroxide and the reaction of sodium with oxygen, to demonstrate how to calculate moles and balance chemical equations. The tutorial also introduces the concept of limiting reactants, explaining how to identify which reactant is completely used up in a reaction.

How do you calculate the number of moles of a substance in a chemical reaction?

What is the significance of the relative formula mass in chemical reactions?

What is the limiting reactant in the reaction between calcium and hydrochloric acid?