Learn the mole concept in chemistry with clear explanations, formulas, Avogadro's number, and step-by-step examples. Perfect for Class 9, 10, 11, NEET & JEE students. A mole (symbol mol) is defined as the amount of substance that contains as many atoms, molecules, ions electrons or any other elementary entities as there are carbon atoms in exactly 12 gm of 12 C . Full syllabus notes, lecture and questions for MOLE CONCEPT - Class 11 - Class 11 | Plus excerises question with solution to help you revise complete syllabus | Best notes, free PDF download What is the Mole Concept? The mole concept is a convenient method of expressing the amount of a substance. Any measurement can be broken down into two parts – the numerical magnitude and the units that the magnitude is expressed in. For example, when the mass of a ball is measured to be 2 kilograms, the magnitude is ‘2’ and the unit is ‘kilogram’. When dealing with particles at an atomic (or molecular) level, even one gram of a pure element is known to contain a huge number of ...
