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In mole concept , you will study about mathematical part using unitary methods Like how many atoms required in the rxn, etc.
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Mole is a measurement used in atomic level. That is one mole of a substance contains Avogrado number of atoms (it is 6.02*10^23 ). It can be found out using the formula; (no of moles) = (total weight in g) / (molecular weight of the substance). For exmple : 32 g of water is 2 moles. calculated using the above formula 32 / 16 = 2 mol. also that means it has (2 * avogrado number) 2 * 6.0210^23 of atoms in it.

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Mole is the measurement in chemistry. It is used to express the amount of a chemical substance. One mole is defined as the amount of substance of a system which contains as many entities like, atoms, molecules and ions as there are atoms in 12 grams of carbon - 12". The number of the particles present in one mole of any substance is equal to 6.022x1023. This is called avogadro’s number or avogadro’s constant.
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Mole concept is a part of chemistry that deals with the no. of atoms, molecules, ions etc. which are very huge in number. Basically, mole is similar to dozen or gross.

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Mole is just like a dozen which is used to measure the entity at the atomic scale
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Mole concept are used basically to find quantity of reactants required to to form a product. It is calculated by finding number of moles required. E.g 1mole of Oxygen is weight in grams divided by molecular weight i.e. 16gms of oxygen divided by 16 which is its molecular mass , hence answer is 1 mole. So we can say 1mole of Hydrogen (2gms) react with half mole of oxygen (16gms) to form 1 mole of water (18gms). 1 mole contains Avogadro number of molecules or elements which is 6.622x10 raise to 23. To be clear 18gms of water is 1 mole water which has 6.622x10 raise to 23. molecules of water.
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A mole represents the quantity of material, which contains one Avogadro's number of chemical units of any substance. The unit of mole is denoted as 'mol'.

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