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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’.
The mole is the amount of a substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12; its symbol is “mol.”The mole is widely used in chemistry as a convenient way to express amounts of reactants and products of chemical reactions.For example, the chemical equation 2 H2 + O2 → 2 H2O implies that 2 moles of dihydrogen (H2) and 1 mole of dioxygen (O2) react to form 2 moles of water (H2O). The mole may also be used to express the number of atoms, ions, or other elementary entities in a given sample of any substance. The concentration of a solution is commonly expressed by its molarity, defined as the number of moles of the dissolved substance per litre of solution.
Mole is the measurement in chemistry. It is used to express the amount of a chemical substance.One mole\xa0is defined as the\xa0amount of substance\xa0of a system which contains as many entities like,\xa0atoms, molecules\xa0and\xa0ions\xa0as there are atoms in\xa012 grams of carbon – 12″.Avogadro number:The number of the particles present in one mole of any substance = 6.022×1023. This is called avogadro’s number or Avogadro’s constant.No. Of particles in 1 mole:1 mole of hydrogen atoms represents 6.022 × 1023\xa0hydrogen atoms.1 mole of hydrogen molecules represents 6.022 × 1023\xa0hydrogen molecules.1 mole of water molecules represents 6.022 × 1023\xa0water molecules.
MOLE CONCEPT:- mole concept is carried out for calculation of particles ( atoms, molecules,ions) present in molecules.
One mole is the amount of substance which contain the avogadro number of the particles