Question

Explain with eg what is meant by a mole of Substance ?

Answer 1

Mole is the amount of substance which contain same number of unit as the number of atoms in 12 g of carbon particle.

i.e; 6.023*10²³ (Avogadro's no)

Answer 2

The mass of one mole of substance, expressed in grams, is equal to the mean relative molecular mass of two substances.

The number of molecules per mole is known as Avogadro's constant.

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