Difference between osmolarity and osmality (if any)?

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  • It is a difference in measurement. Osmolality is the number of osmoles of solute dissolved in a kilogram of solvent. An osmole is a mole of the solule, which contains 6X10 to the 23rd particles, and can be determined by the molecular weight of the substance. Osmolarity is the number of osmoles per liter of solvent. The difference is in the solvent. One is measured in kilograms, the other in liters.
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  • It’s the difference between expressing things per liter or per kg of solvent.

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