What is a mole in chemistry?

Question

what is a mole in chemistry basically?Why is it said that gram atomic or molecular mass of a substance containg avogadros no of particles is a mole?i want to ask that in this definition why is there a relation between avogadro no.and gram atomic/molecular mass?

Answer 1

A mole is basically just an easy way of grouping HUGE numbers of particles together into a more manageable size. The weight of the particles on the Periodic Table is conveyed in AMU's, yet a mole of these would also give you that exact number of grams of the substance. Sorry I can't be more exact than this, still first year of Chemistry.

Also a mole is avogadro's number: 6.022 x 10^23

Answer 2

Mole:

The molecular weight of a substance expressed in grams;

the basic unit of amount of substance adopted under the Systeme International d'Unites.

Avogadros number is the number of molecules in a mole of a substance (approximately 602,250,000,000,000,000,000,000).

Answer 3

A mole(mol) is the S.I unit for the amount of substance.

Answer 4

A mole is a unit for measuring the amount of atoms/ions/molecules, like dozen eggs, or a pair of socks.

There is no obvious relationship between avogadro's constant and gram atomic mass. Avogadro's number is the number of particles in a mole, or the unit. These number of particles give you the gram atomic mass.

Answer 5

The mole is used to measure quantities of a substance (unit mol).

1 mole is defined as the amount of substance that contains the same number of particles as 12g of the commonest isotope of Carbon ^12C

12g of carbon 6.02x 10^23  This is called Avogadro's number (NA)