Gas mole

Mole The SI unit of quantity the amount of a pure element or chemical compound that contains the same number of atoms or molecules. It is often simpler to use moles rather than volume or mass when working with gases. Moles are given by... 

Moles and elements Moles and compounds Moles and gases Moles and solutions... 

Thus, whereas chemists have historically expressed analyses mostly by mass per mass, or as convenient percentages, or by mass per volume, they could express their measurements in amount of a specific substance per mass (mole per kilogram) or per volume. In cases such as pure materials and gases, mole per mole can be used. A percentage statement, or one in parts per thousand, million, or billion, is possible, though not recommended. In the SI system, as originally visualized, such dimensionless numbers as results of measurements are not favored. The quantitative result of any measurement should be expressed by a number multiplied by the appropriate unit associated with the measured quantity. As is further discussed below, this original preference proposed for the International System does not fit well with much of current practice in chemical measurements. 

The vapor pressure of a volatile liquid determines the maximum mole fraction of that substance in a gas phase in contact with that volatile liquid. Remember that with gases, mole fraction is the same as volume fraction and pressure fraction. This is the principle that guides an anesthetic vaporizer (Figure 7.34). 

So iar in our energy calculations, we have been considering each substance to be a completely pure and separate material. The physical properties of an ideal solution or mixture may be computed from the sum of the properties in question for the individual components. For gases, mole fractions can be used as weighting values, or, alternatively, each component can be considered to be independent of the others. In most instances so far in this book we have used the latter procedure. Using the former technique, as we did in a few instances, we could write down, for the heat capacity of an ideal mixture,... 

We ate given thtee of the font ptopetties of ideal gases (moles, volume, and tempetatute), and we ate asked to calculate the fourth (ptessute). Thetefote, we use the ideal gas equation to solve this problem. 

For ideal gases, mole ftaetion is the same as volume fraction. From Table 17.1 of the text, CO2 is 0.033% of the composition of dry air, by volume. The value 0.033% means 0.033 volumes (or moles, in this case) out of 100 or... 

For ideal gases since molar ratios are equal to the volume ratios, 0 is the same in molar and volume units. In addition, for ideal gases mole frac equals volume fraction thus, Eq. ri7-8ci can be used with either molar or volumetric flow rates. The rate expression Eq. f 17-41 can be written for molar flows as. 

Fig. 14. Coiielation of effective average slope m of equilibrium line (dilute part of absorber) equilibrium line concave upward. gas mole fraction at...

Oxidizer Available oxygen Melting point, °C Density, g/cm Heat of formation, kj / mof Heat capacity, J/(mol-K) Gas, moles per 100 g"... 

WU low cost, stoichiometric reactions requires significant dry diluent gas mole ratio most every sulfonation and sulfation ... 

MF = total acid-gas fraction in inlet gas, moles acid gas/mole inlet gas... 

Determine DEA circulation rate using 35 wt. % DEA and an acid-gas loading of 0.50 mole acid gas/mole DEA. 

If not, what are the important characteristics of the thermal decomposition if it should occur, such as time to onset, enthalpy of decomposition, self-heat rate, rate of pressure rise, rate of temperature rise, moles of gas/mole of substance and... 

C = concentration of dissolved gas (mole/liter) k = Henry s constant (dependent on temperature, mole / L atm) Raoult s law Pi = XiPi° where... 

To avoid, or diminish the fouling process, a blend of PVA with cellulose (CELL) has been obtained by spin coated of the PVA (M=50 000 99% hydrolysis degree) / glutaraldehyde (GA) solution (corresponding to 0.005 or 0.01 moles of GA/ mole of PVA... 

R = moles acid gas/mole NH3 wt % NH3 = total weight percent of ammonia in soln. 

Table III gives values of the changes in Gibbs energy, enthalpy, entropy, and heat capacity of the solution process as calculated from the equations of Table I. Figure 1 shows the recommended noble gas mole fraction solubilities at unit gas partial pressure (atm) as a function of temperature. The temperature of minimum solubility is marked.

Explosive h Arb Detonation products (moles gas/mole explosive) arb Afirb [Pg.16]

In a molecule such as mercury dimethyl the two bond orbitals would be expected to use all the orbital between them.17 The simple treatment shows that the two bonds would then be opposed. This is substantiated by the observation of a linear configuration for gas mole-... 

Component Composition of liquid, mole percent Composition of gas, mole percent... 

Component Composition, separator gas, mole fraction Composition, stock-tank gas, mole fraction Composition, stock-tank liquid, mole fraction... 

Component Composition, separator gas, mole fraction lb mole j SP gas 1b mole j SP gas Composition, stock-tank gas, mole fraction lb mole j ST gas lb mole j ST gas Composition, stock-tank oil mole fraction lb mole j STO lb mole j res gas Composition, recombined gas, mole fraction lb mole j res gas... 

Component Separator gas, mole fraction lb mole i SP gas lb mole SP gas yi lb mole i SP gas lb mole SP liq 50.99y, Separator liquid, mole fraction lb mole i SP lia lb mole SP liq Xi lb mole j in well stream lb mole SP liq Xj+50.99yj Recombined gas, mole fraction lb mole j in well stream lb mole well stream Zj... 

The units of mole fraction are pound moles of component j per pound mole of gas. Mole fraction can be converted into gal/Mscf as follows. 

Component Composition of mixture, mole fraction zl Vapor pressure at 150°F, P i Composition of gas, mole fraction yi=zjf1 +ndp/t>v -1) Composition of liquid, mole fraction xi=yi(p/pvj)... 

---