, molar (M)
   these notations, traditionally used by chemists to describe the concentration of chemical solutions, often appear to be units of measurement. It's easy to get them confused. The term "molal" describes the concentration of a solution in moles per kilogram of solvent (mol/kg), while "molar" describes a concentration in moles per liter (mol/L). A solution described as 1.0 µM has a concentration of 1.0 µmol/L. These units are not approved by the General Conference on Weights and Measures. Their use is declining, but still substantial.

Dictionary of units of measurement. 2015.

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  • molal — adj. (Chem.) Being at a concentration with the designated number of moles (of solute) per 1000 grams of solvent; as, an 0.5 molal solution of glycerol in water. Compare {molar}. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • molal — MOLÁL, Ă, molali, e, adj. (chim.. fiz.) De mol1. Concentraţie molală. – Din engl. molal. Trimis de LauraGellner, 03.06.2004. Sursa: DEX 98  molál adj. m., pl. moláli; f …   Dicționar Român

  • molal — [mō′ləl] adj. Chem. relating to the mole or gram molecular weight; specif., designating a solution with a concentration equal to one mole of the solute in 1,000 grams of the solvent …   English World dictionary

  • molal — Denoting 1 mol of solute dissolved in 1000 g of solvent; such solutions provide a definite ratio of solute to solvent molecules. Cf.:molar (4). * * * mol·al mō ləl adj of, relating to, or containing a mole <the molal volume of a gas is 22.4… …   Medical dictionary

  • Molal — Unter der Molalität (Formelzeichen: b) versteht man den Quotienten aus der Stoffmenge (n) eines gelösten Stoffes X und der Masse (m) seines Lösungsmittels L. Sie wird in der Einheit Mol pro Kilogramm angegeben: Mit Hilfe der Avogadro Konstante… …   Deutsch Wikipedia

  • molal concentration — molialumas statusas T sritis chemija apibrėžtis Ištirpusios medžiagos molių kiekis 1 kg tirpiklio. atitikmenys: angl. molal concentration; molality rus. моляльная концентрация; моляльность ryšiai: sinonimas – molialinė koncentracija …   Chemijos terminų aiškinamasis žodynas

  • molal concentration — molialumas statusas T sritis fizika atitikmenys: angl. molal concentration; molality vok. Kilogramm Molalität, f; molale Konzentration, f; Molalität, f rus. моляльная концентрация, f; моляльность, f pranc. concentration molale, f; molalité, f …   Fizikos terminų žodynas

  • molal volume — molio tūris statusas T sritis fizika atitikmenys: angl. gram molecular volume; molal volume; molar volume vok. Molvolumen, n rus. мольный объём, m; молярный объём, m pranc. volume molaire, m …   Fizikos terminų žodynas

  • molal concentration — noun concentration measured by the number of moles of solute per kilogram of solvent • Syn: ↑molality • Derivationally related forms: ↑molal (for: ↑molality) • Hypernyms: ↑concentration …   Useful english dictionary

  • molal — adjective Etymology: 5mole Date: 1905 of, relating to, or containing a mole of solute per 1000 grams of solvent • molality noun …   New Collegiate Dictionary

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