The mole is a unit of measurement used to describe the amount of a chemical species.One mole contains 6.022x1023 particles (atoms, molecules, ions, electrons).n = mass of substance(g) molecular mass

m MW Molarity: In chemistry, molarity is the most frequently used method of expressing concentration of a solution.It can be used to describe the number of atoms, molecules, ions, electrons, etc.To determine the number of moles, n, in a given quantity of a substance, you divide the given quantity of the substance by the molecular weight.

The mole is a unit of measurement used to describe the amount of a chemical species. It can be used to
describe the number of atoms, molecules, ions, electrons, etc. The abbreviation of mole or moles is mol.
One mole contains 6.022×1023 particles (atoms, molecules, ions, electrons). This is known as Avogadro’s
number.
The weight in grams of one mole of a substance is the molecular weight (MW), or molar mass, of that
substance. To determine the number of moles, n, in a given quantity of a substance, you divide the given
quantity of the substance by the molecular weight.
n =
𝒎𝒂𝒔𝒔 𝒐𝒇 𝒔𝒖𝒃𝒔𝒕𝒂𝒏𝒄𝒆(𝒈)
𝒎𝒐𝒍𝒆𝒄𝒖𝒍𝒂𝒓 𝒎𝒂𝒔𝒔

𝒎
𝑴𝑾
Molarity: In chemistry, molarity is the most frequently used method of expressing concentration of a
solution. Molarity indicates the number of moles of solute dissolved in a liter of a solution; has the symbol
M, and the unit, moles per liter (mol/L)
The concentration of a solution in mol/L can be calculated using the formula:
M =
𝒏𝒖𝒎𝒃𝒆𝒓 𝒐𝒇 𝒎𝒐𝒍𝒆𝒔 𝒐𝒇 𝒔𝒐𝒍𝒖𝒕𝒆(𝒏)
𝑽𝒐𝒍𝒖𝒎𝒆(𝑳)

𝒏
𝑽
OR 𝑴=
𝒏
𝑽
M = concentration of the solution in moles per litre (mol/L)
n = number of moles of solute (mol)
V = volume of solution in litres (L