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Formula for concentration

Accepted Answer

Concentration is typically expressed as the amount of solute per unit volume of solution. Here are some common formulas:

Molarity (M): moles of solute / liters of solution
Molality (m): moles of solute / kilograms of solvent
Mass percent (% w/w): (mass of solute / mass of solution) x 100%
Volume percent (% v/v): (volume of solute / volume of solution) x 100%
Parts per million (ppm): (mass of solute / mass of solution) x 10^6
Parts per billion (ppb): (mass of solute / mass of solution) x 10^9

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