Concept of moles is an important concepts in chemistry. Students learn the basic concepts in

**Chapter 3 Chemical Formulae and Equation**during form 4. Later, they relate the moles concepts with molarity of a solution in**Chapter 7 Acids and Bases**and**Chapter 8 Salts**.During form 5, students are expected to apply the concept well in various numerical problems in

**Chapter 1 Rate of Reaction**,**Chapter 4 Thermochemistry.**Some

**common wrong concepts**that I have come across:- students thought that the
is the same with*moles**molarity.* - they thought that volume refer for both
**solution**and**gas**.

Plese my dear students, please

**study**the relationship above thoroughly. Whenever come across any question related to this concepts,**understand**the questions and substitute the value given in the equation correctly.
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