Number of Moles

One of the essential skills a chemistry student crucially required to master is to find the number of moles of a substance. Without it, I believe they soon will find themselves at the lost end. I share here four formulas for the number of moles.

 

 Please take note:

• RAM  = Relative Atomic Mass
• RMM = Relative Molecular Mass 
• Avogadro's Constant = 6.02 x 10²³ mol^-1
• Molar Volume of Gas = 24 dm³mol^-1 at room condition or 22.4 dm³mol^-1 at STP     

Every year my students would ask me this question, "Sir, what is the best way to memorize these formulas?" 
And I said, "Please don't worry about that, I'm sure they will eventually stick to your mind. So here is the homework for the weekend, I want them on my table by next Monday morning."