molalidade
1. A measure of the concentration of a solute in a solution, defined as the number of moles of solute per kilogram of solvent
The molality of the sodium chloride solution was calculated to be 0.5 mol/kg.
A molalidade da solução de cloreto de sódio foi calculada como sendo 0,5 mol/kg.
2. A colligative property unit used in chemistry and thermodynamics, independent of temperature
Unlike molarity, molality does not change with temperature variations.
Ao contrário da molaridade, a molalidade não muda com variações de temperatura.
Molality is a fundamental concept in chemistry education and is taught in high schools and universities in both Brazil and Portugal. It is particularly important in thermochemistry and physical chemistry, where temperature-independent concentration measurements are critical. The term is used identically across all English and Portuguese-speaking scientific communities.
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