Question

explain with examples what is meant by a mole of a substance

Answer 1

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mole term was first given by Wilhelm Ostwald from latin word mole which means heap or piles. in 1967 it was accepted by the world . one mole of any species is that quantity in number having mass equal to its atomic mass or molecular mass in grams.

a mole of a substance is that the amount of substance which contains same number of particles ( they maybe atoms , particles , ions , molecules ) as there are carbon atoms in 12 grams of Carbon - 12 ( isotope ) element

1 mole = 6.022*10^23 ( founded by Amedeo Avagadro )

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