Chapter 4 Moles

Chapter 4 Moles



Avogradro and his mole number!

 

                                    What is a mole?

         A mole is a number, just like a dozen is the number 12.  However the mole number is called the Advagadro's number which is about 6.022*10^23.

Why do is mole so important in Chemistry?
-Acording to Avogadro's Hypotheses, Gas with equal volume at same temperature and pressure will have the same number of particles.


Equal volumes of gas, at the same temperature and pressure, contain the same number of molecules.-This means each of these gas will contain 1 mole and 1 mole more=6.022*10^23  partciles,unites or molecules