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THE MOLE • the standard unit of amount of a substance ( mol ) • the number of particles in a mole is known as Avogadro’s constant ( N A ) • Avogadro’s constant has a value of 6.02 x 10 23 mol -1 .
In the field of chemistry, a mole is defined as the amount of a substance that contains exactly 6.02214076 * 1023 ‘elementary entities’ of the given substance. The number 6.02214076*10 23 is popularly known as the Avogadro constant and is often denoted by the symbol ‘N A ’.
23 lis 2022 · A mole is defined as the amount of substance containing the same number of different entities (such as atoms, ions, and molecules) as the number of atoms in a sample of pure 12C weighing precisely 12 g.
Officially, the mole (symbol mol) is the SI term for the amount of substance containing as many elementary particles as there are atoms in 0.012 kg of carbon-12 (which is about 6.02 x 10 23 atoms).
A mole is the amount of a substance that contains as many elementary entities (atoms, molecules or other particles) as there are atoms in exactly 0.012 kg or 12 g of the carbon-12 isotope.
“ANY TIME YOU HAVE MOLE AND MOLE IN THE SAME FRACTION ALWAYS LOOK AT THE BALANCED CHEMICAL EQUATION” Stoichiometry is used to convert from moles of one substance to moles of a different substances o These substances are related by their mole ratios established by the balanced chemical eq. Mole-to-Mole Conversion 1.
In order to carry out quantitative investigations in chemistry it is necessary to be able to 'count' atoms. This is done using the mole. A mole contains a given number (the Avogadro constant) of atoms or other particles, and this is measured by mass.
