Question

what is mole concept class 9​

Answer 1

If we weigh an element equal to its atomic mass in grams,then it contains 6.022×1023 atoms of the element.The gram atomic mass of the element as well as 6.022×1023 atoms of the element, both represent 1 mole of element.1 mole of any species (atoms,molecules,ions) is equal to its atomic mass or molecular mass in grams

Answer 2

A mole (symbol mol) is defined as the amount of substance that contains as many atoms, molecules, ions, electrons or any other elementary entities as there are carbon atoms in exactly 12 gm of . The number of atoms in 12 gm of is called Avogadro's number .