Question

Molecular mass and mole conpect

Answer 1

it shows the identity of atom

Answer 2

mole concept

it is not possible to calculate the weight of particles individually, a collection of such particles called mole is taken for all practical purposes. It was discovered that the number of atoms present in 12g of carbon of 12C isotope is 6.023 x 1023 atoms. This is referred to as Avogadro number after the discoverer Avogadro. A mole of a gas is the amount of a substance containing 6.023 x 1023 particles. It is a basic unit of the amount or quantity of a substance. The substance may be atoms, mo
lecules, ions or group of ions.

molecular mass..

The molecular mass of a substance is the relative mass of its molecule as compared with the mass of a 12C atom taken as 12-units. It indicates the number of times; one molecule of the substance is heavier than atom......