Mole fraction of a component in ratio of no. of moles of 1 divided by no. of moles of all the components.

& also, x₁ + x₂ = 1

Parts per million (ppm)

Molarity eqvation :-

M₁ V₁ = M₂ V₂

For a balanced equation

n1 and n2 are the stoechiometric coefficients .