DEFINE MOLE CONCEPT & ITS FORMULAS?

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The Mole Concept:

One mole of a substance (atoms, molecules, ions, or particles) is that quantity in number having a mass equal to its atomic or molecular mass in grams. One mole of any substance contains 6.022 �10 ²³ particles (atoms, molecules, or ions). This means that one mole atom of any substance contains 6.022 �0²³ atoms. Similarly, one mole molecule of any substance contains 6.022 �0²³ molecules, and one mole ion of any substance contains 6.022 �0²³ ions. Hence, the mass of a particular substance is fixed.

One mole is defined as No entities of the substance, where No is equal to Avogadro’s number. The number is generally taken as 6.022 X 10²³. Moles measure quantity of substance.

Mole Concept:

As group of 12 of anything is called one dozen, similarly, 6.022 × 10²³ number of entities is called one mole. The entities may be atoms, molecules or any other particles.

Mole is also called Avogadro constant which is denoted by N_A.

As per definition- One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g of the C-12 isotope.

Learn the mole concept table

Mole concept allows counting atoms molecules and amount of substance during reaction. For example the diagram is a simple method to learn the conversion from one unit to other.

Atoms and molecules are very small in size but their numbers in even a small amount of any substance is very large. To handle these large numbers a unit of similar magnitude is required. Just as we denote dozen for 12 items and score for 20 items, we use mole for microscopic entities. 1 mole can be defined as “ the amount of substance that contains as many specified elementary particles as the number of atoms in 12 grams of carbon-12 isotope .”

Formulas:-

i). no of moles = given mass/ gram atomic mass (gAm) or gram molecular mass (gMm)

ii). no of moles = no of patrticles x avogadro 's number

iii). mass = no of moles x gAm or gMm

iv). no of particles = no of moles x avogadro constant

Hope this helps.

The Mole Concept:

One mole of a substance (atoms, molecules, ions, or particles) is that quantity in number having a mass equal to its atomic or molecular mass in grams. One mole of any substance contains 6.022 �10 ²³ particles (atoms, molecules, or ions). This means that one mole atom of any substance contains 6.022 �0²³ atoms. Similarly, one mole molecule of any substance contains 6.022 �0²³ molecules, and one mole ion of any substance contains 6.022 �0²³ ions. Hence, the mass of a particular substance is fixed.