Concentration total molar

For example, in the case of dilute solutions, the van t Hoff s equation may be used to piedict the osmotic pressure (jr = CRT) where n is the osmotic pressure of the solution, C is the molar concentration of the solute, ft is the universal gas constant and T is the absolute temperature, Fm dissociating solutes, the concentration is that of the total ions. For example, NaCI dissociates in water into two ions Na" " and Cl . Therefore, the total molar concentration of ions is hvice the molar concentration of NaCI. A useful rule of thumb for predicting osmotic pressure of aqueous solutions is 0,01 psi/ppm of solute (Weber, 1972). 

P]0 is the total molar concentration of the protein and [L]0 is the total molar concentration of ligand. X is the molar concentration of the bound species determined according to the chemical shift change ... 

Total moles transferred/area time Total molar concentration... 

For an ideal gas, the total molar concentration Cj is constant at a given total pressure P and temperature T. This approximation holds quite well for real gases and vapours, except at high pressures. For a liquid however, CT may show considerable variations as the concentrations of the components change and, in practice, the total mass concentration (density p of the mixture) is much more nearly constant. Thus for a mixture of ethanol and water for example, the mass density will range from about 790 to 1000 kg/m3 whereas the molar density will range from about 17 to 56 kmol/m3. For this reason the diffusion equations are frequently written in the form of a mass flux JA (mass/area x time) and the concentration gradients in terms of mass concentrations, such as cA. 

Consider the movement of an element of fluid consisting of n molar units of a mixture of two constituents A and B from a region outside the boundary layer, where the molecular concentrations are CAs and CBs, to the surface where the corresponding concentrations are CAw and CBw. The total molar concentration is everywhere Cr- The transfer is effected in a time t and takes place at an area A of surface. 

It is assumed that the total molar concentration is everywhere constant. Thus the rate of transfer per unit area and unit time is given by ... 

Sports drinks provide water to the body in the form of an isotonic solution (one having the same total molar concentration of solutes as human blood). These drinks contain electrolytes such as NaCI and KCI as well as sugar and... 

Any solution contains at least two chemical species, the solvent and one or more solutes. The mass of a solution is the sum of the masses of the solvent and all dissolved solutes. To answer questions such as How much is there about solutions, we need to know the amount of each solute present in a specified volume of solution. The amount of a solute in a solution is given by the concentration, which is the ratio of the amount of solute to the amount of solution. In chemistry the most common measure of concentration is molarity (M). Molarity is the number of moles of solute (n) divided by the total volume of the solution (V) in liters ... 

The problem specifies a solution volume of 1.5 L with a total molarity of 0.150 mol/L. The total molarity is the combined concentration of the two buffer components il/acetate + - acetic acid 0.150 M Use the total volume of the solution, 1.5 L, to determine the total number of moles in the system ... 

What concentrations of NH4 and NH3 are required First use the buffer equation to find the proper ratio of base to acid, then use the total molarity of the solution to determine the concentrations of NH3... 

Use the total molarity of the buffer solution to find the concentrations ... 

In equation (i )[Na ] is the total molar concentration of free sodiiam ions, [ SL j is the molar concentration of ionic Cj 2 25 S05J, and [SLS]jjj is the concentration of the SLS micelles. The corresponding ionic strengths are indicated in the fig ire heading. The capillary model can also be used to account for the ionic strength effects seen in Figure 2 and is discussed elsewhere (23). 

CTOT total molar concentration of gas phase (niol/mgfls3)... 

Here Dq and Dl are the diffusivities of A in the gas phase and the coating liquid, respectively, and is the total molar concentration of the shell phase. 

Then, if the total molar concentration of monomers in all states of aggregation is Cq, the fraction of material in the dimer form (assuming only a small amount is dimerized) is... 

In a mixture of two gases A and B provided that the total pressure, and hence the total molar concentration is constant, d[A]/dx and d[B]/dx are equal and opposite and A and B tend to diffuse in opposite directions. In equimolar counter-diffusion, the two components diffuse at equal and opposite rates =- ba- Equation (108) can then be integrated... 

The equation of state can be furnished if the partial molar fraction xf can be described in terms of the real surface excess The molar fraction is defined as the molar concentration of the component in the surface layer divided by the total molar concentration of all components in the layer. Since the molar concentrations can also be expressed in terms of the surface area, the molar fraction is equivalent to the partial coverage 9i of the component. Now we have x f = 6i = Ficoi. In terms of the surface coverage 9i and the bulk concentration Ci of the zth component, Eqs. 6 and 7 can be transformed to give... 

Michaelis-Menten Approach In enzyme reactions, the total molar concentration of the free and combined enzyme, Cpg (kmol m ) should be constant that is. 

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