The mass ratio is defined as the mass of a constituent divided by the total mass of all other constituents in a mixture.
In a mixture, the mass fraction is the amount of mass of one substance, divided by the mass of the total mixture. The sum of all the mass fractions is
Mixing ratio (mass ratio)
chemistry and physics, the dimensionless mixing ratio is defined as the abundance of one component of a mixture relative to that of all other components.
If the magnetic field is uniform and all other forces are absent, then the Lorentz force will cause a particle to undergo a constant acceleration