Mole per cubic meter

FIG. 14-7 O Connell correlation for overall column efficiency for absorption. To convert ffP/ i in pound-moles per cubic foot-centipoise to Idlogram-moles per cubic meter-pascal-second, multiply by 1.60 X 10 . [O Connell, Trans. Am. Inst. Chem. Eng., 42, 741 (1946).]... 

Mass Transfer Rates. Mass transfer occurs across the interface. The rate of mass transfer is proportional to the interfacial area and the concentration driving force. Suppose component A is being transferred from the gas to the liquid. The concentration of A in the gas phase is Ug and the concentration of A in the liquid phase is u . Both concentrations have units of moles per cubic meter however they are not directly comparable because they are in different phases. This fact makes mass transfer more difficult than heat transfer since the temperature is the temperature regardless of what phase it is measured in, and the driving force for heat transfer across an interface is just the temperature difference Tg—Ti. For mass transfer, the driving force is not Ug—ai. Instead, one of the concentrations must be converted to its equivalent value in the other phase. 

II This H is for Henry s law expressed as H = P/[PAH], where P is the gas-phase concentration in pascals and [PAH] is the liquid-phase concentration in moles per cubic meter. Traditionally in atmospheric chemistry, Henry s law is expressed as H = [X]/Px. 

Sverdrup et al. (1942) estimated that the oxygen content of deep sea water averages about 2.5 cubic centimeters at standard temperature and pressure pa liter (0.1 mole per cubic meter). Thus, there are about 250... 

Amount-of-substance concentration mole per cubic meter mol/m3... 

Oxl5 chemical activity of the oxidized part of redox (Reaction 1.1), regularly expressed in mole per cubic meter, usually in mole per liter... 

Concentration (of amount of substance) mole per cubic meter mol/m2... 

After items one through seven above plus the water source are entered into the screen shown in Figure 10.8, the feed water analysis is entered. The input screen can be accessed from the menu under "Options," or by clicking on the "+/-" button on the input screen (located just left of the "Water Type" button). The designer can enter water quality data as either ppm as ion, ppm as calcium carbonate, milli-equivalents per liter or milli-moles per cubic meter. 

The concentration of a substance is the number of moles per unit volume. The SI units moles per cubic meter are inconveniently large for chemical work, so instead we use the molarity, defined as the number of moles of solute per liter of solution ... 

Co solvent concentration, moles per cubic meter U open-circuit potential of the cell, voltage... 

The concentration c is expressed in moles per cubic meter. For the case that the ions all have the same radius r,-, 2r,- is equal to the distance of closest approach, a, defined in fig. 3.5. Then, the summation in equation (3.9.4) can be related to the ionic strength and the expression for F can be written as... 

This book uses the term concentration to mean the molar density of a component, for example, moles of A per unit volume of the reacting mixture. In the International System of Units (SI) concentration is in moles per cubic meters where the moles are gram moles. Molarity is classically defined as moles per liter of solution and is a similar concentration measurement. Molality is classically defined as moles per kilogram of solvent (not of solution) and is thus not a standard measure of concentration. For gases at low pressure and moderate temperatures, partial pressures are sometimes used instead of concentrations since partial pressures are proportional to concentration for ideal gases. 

The SI units for reaction rate are moles per cubic meter per second, but other time units are frequently used and other volume units are sometimes used. It is obviously necessary to specify to what compound the reaction rate refers. This book makes the specification essentially automatic by defining a rate, 01, for the reaction as a whole. The reaction rate for component A is denoted 01k and is found from... 

---