molality


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molality:

see concentrationconcentration,
in chemistry, measure of the relative proportions of two or more quantities in a mixture. The concentration of a solute is very important in studying chemical reactions because it determines how often molecules collide in solution and thus indirectly determines
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molality

[mō′lal·əd·ē]
(chemistry)
Concentration given as moles per 1000 grams of solvent.
References in periodicals archive ?
Variation of ([[DELTA].sub.trs][V.sup.0.sub.[phi]][V.sup.0.sub.[phi]]) with molality is depicted in Figure 5.
Figure 7 shows the viscosities of gel-type electrolytes prepared by three different ionic liquids under the same molality of 0.4 M at different temperatures.
When solubility diagrams for gypsum and anhydrite are obtained for several systems CaS[O.sub.4]-NaCl-[H.sub.2]O following the experimental approach --that is, isomolal solutions with respect to NaCl--, the variation of the transition temperature gypsum-anhydrite with the NaCl molality (or the water activity) can be obtained.
The plots of variations of ultrasonic velocities of solutions of citric acid with molality are shown in the Figure 3.
For a water solution, if the total solute concentration is less than 10 000 ppm and the solution temperature is near 4[degrees]C, molarity and molality may be considered equal and 1 ppm equals 1 mg/L.
This ranged from 30 min to several hours depending on psychrometer model, molality, and measurement conditions (e.g., waiting for full thermal stability after a large temperature change).
Ion activity is a function of activity coefficient and molality. The activity coefficient is determined by ionic strength, ion size, and temperature.
Where: [V.sub.B] is the volume of NaOH solution spent in the blank, [V.sub.G] is the volume of NaOH solution spent in the titration, N is the molality of NaOH, PA is the sample weight and H is the moisture content on the chitosan sample.
"m" represents molality and the superscripts T and B represent top phase and bottom phase, respectively.
where [M.sub.w], [H.sub.2]O is the molecular weight of water, [v.sub.i] is the number of ions in the sail, and [M.sub.i] the molality of the solution.
Like other direct-reading electrochemical biosensors (1), creatinine sensors respond to the molality of creatinine in the sample (amount of creatinine per unit mass of water).