The Mass Concentration calculator computes the mass concentration based on the mass and volume.

INSTRUCTIONS: Choose units and enter the following:

• (m_i) This is the mass
• (V) This is the volume

Mass Concentration (ρ_i): The calculator returns the mass concentration in grams per milliliter.

The Math / Science

This Mass Concentration equation computes the ratio of the mass of a constituent solute to the total volume of its solution.  The resultant is the mass of solute per unit volume of solution.

For a pure chemical, the mass concentration equals its density.   The formula for mass concentration is:

    ρ_i = m_i / V

where:

• ρ_i is the mass concentration
• m_i is the mass of the component solute
• V is the volume of the solution that includes the solute

NOTES

This ratio is sometimes expressed as a "weight/volume percentage", which has some fundamental pseudo-science implications.  First the solute component is a measured mass, not a weight. Second, the ratio cannot be made a percentage as the units in the numerator and denominator are different.  To use the weight/volume percentage in analytical context requires the chemist to reverse engineer the actual ratio to be what it is, mass-to-volume ratio, and thus the pseudo-context serves no real purpose.  Treated as a Mass Concentration it gives precisely the information that is available, how much mass of the solute there is per unit of volume of the solution.

See Also

• Reduced Pressure
• Reduced Temperature
• Reduced Specific Volume
• Reduced Properties Calculator
• Critical Temperatures and Pressures (data set)
• Critical Temperature (liquid-vapor)
• Inherent Viscosity
• Inherent Viscosity[mi, V, eta, eta_s]
• Relative Viscosity
• Mass Concentration