where M, m, [rho] and [[rho].sub.0] are the molar mass of the solute, molality
of the sodium saccharin solution, density of solvent, and the density of the aqueous solution, respectively.
As known in Table 2, when molality
is 0.2 M, the acquired [V.sub.oc] is 0.73 V, [J.sub.sc] is 9.23mA/[cm.sup.2], FF is 0.62, and [eta] is 4.21%.
Direct biosensors for point-of-care (POC) measuring of analytes such as creatinine, glucose, or lactate detect chemical bioactivity as a function of analyte molality
(amount of analyte per unit of water mass, e.g., mmol/kg).
From Table 1 it is observed that density of aqueous solution varies linearly with molality
Molal concentration (molality
) is the number of moles of solute per kilogram of solvent.
where t is time (s), [a.dun.OH]- is the hydroxide activity, [m.sub.Fe2+] is the molality
of the ferrous iron in the solution and P[O.sub.2] is the oxygen partial pressure (atm).
This same sort of repetitive testing can be done with many concepts such as moles, molarity, molality
, the periodic table, quantum numbers, and so forth.
where [P.sub.[phi]] is the osmotic pressure of the solution (Pa), v is the total number of moles of ions given by one mole of electrolyte, [V.sub.s] is the partial molal volume of the water, [m.sup.0] is unit molality
, m is molality
of the solution, [phi] is the osmotic coefficient of the solution and [M.sub.s] is the molar weight (Stokes 1979).
Electromotive-force measurements of cells containing hydrochloric acid and Holmium chloride at constant total molality
have been used to determine the variation of the logarithm of the activity coefficient of hydrochloric acid with change in the amount of Holmium chloride in the solution.
Hydrogen peroxide produced in the enzymatic reactions diffuses to the platinum electrode and is oxidized at constant potential of 675 mV (equation 3), generating current proportional to the glucose or lactate levels (activity, molality
) present in the sample.[3,4] Glucose and lactate levels are calibrated using a 2-point process.
Sodium chloride calibration solutions were used throughout as water potential standards, and the combined effect of temperature and molality
on water potential was taken from the tables by Lang (1967).
where [zm.sub.c] is the molality
of cation species and [zm.sub.a] is the molality
of anion species (WATSPEC; Wigley 1977).
Plot of the molality
of dissolved SiO2 in equilibrium with quartz in seawater versus temperature for isobars from 1500 to 1000 bar according to Von Damm et al.
where [mathematical expression not reproducible] indicates the C[O.sub.2] fugacity in phase j, j represents the gas and aqueous phases, [mathematical expression not reproducible] is Henry's constant of C[O.sub.2] in brine, [mathematical expression not reproducible] is the molar fraction of C[O.sub.2] in the aqueous phase, [mathematical expression not reproducible] is Henry's constant of C[O.sub.2] at zero salinity, [mathematical expression not reproducible] is the salting-out coefficient of C[O.sub.2], and [m.sub.salt] is the molality
of the dissolved salt.