Pound mole

To convert calories per gram-kelvin to British thermal units per pound-degree Ranldne, multiply by 1.0 to convert calories per gram-mole-kelvin to British thermal units per pound-mole-degree Ranldne, multiply by 1.0. 

F = °C -h 32 to convert kilocalories per gram-mole to British thermal units per pound-mole, multiply by 1.799 X 10". ... 

FIG. 12-5 Revised form of high-temperature psychrometric chart for air and combustion products, based on pound-moles of water vapor and dry gases. [Hatta, Chem. Metall. Eng., 37, 64 (1930).]... 

NOTE To convert degrees Celsius to degrees Fahrenheit, F = 1.8 C -I- 32. To convert cubic centimeters per gram-mole to cubic feet per pound-mole, multiply by 0.016. 

Pressure drops in the column will he neglected, and the K values will he read at 827 kPa (120 psia) in both column sections from the DePriester nomograph in Fig. 13-14. When constant molar overflow is assumed in each section, the rates in pound-moles per hour in the upper and lower sections are as follows ... 

NOTE To convert pound-moles per hour to Idlogram-moles per second, multiply by 1.26 X 10"h... 

NOTE. To convert degrees Fahrenheit to degrees Celsius, = ( F — 32)/1.8. To convert pound-moles per hour to Idlogram-moles per second, multiply by 1.26 X l0- ... 

NOTE To convert pound-moles to kilogram-moles, multiply by 0.454. 

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).]... 

FIG, 14-77 Mass-transfer coefficients versus average gas velocity—HCl absorption, wetted-wall column. To convert pound-moles per hour-square foot-atmosphere to Idlogram-moles per second-square meter-atmosphere, multiply by 0.00136 to convert pounds per hour-square foot to kilograms per second-square meter, multiply by 0.00136 to convert feet to meters, multiply by 0.305 and to convert inches to milhmeters, multiply by 25.4. [Dohratz et at, Chem. Eng. Prog., 49, 611 (1953).]... 

FIG. 22-38 Tbe variation of adsorption density, oil-droplet contact angle, and oil-extraction recovery of bematite as a function of pH. To convert gram-moles per square centimeter to pound-moles per square foot, multiply hy 2.048. [From Raghavan and Fuerstenau, Am. Inst. Cbem. Eng. Symp. Ser., 71(150), 59... 

Specific volume is determined by application of the ideal gas law. One pound mole of air occupies a volume of 359 cubic feet at standard conditions, hence ... 

PROBLEM What is the amount of heat which must be removed in cooling one pound mole of 0.6 Sp. Gravity gas at 120 Absolute from 300°F to 100°F ... 

One pound-mole of an ideal gas is compressed at a constant pressure of 1 atm in a piston-like device from an initial volume of 1.5 ft to a final volume of 0.5 ft. The internal energy is known to decrease by 20 Btu. How much heat was transferred to or from the gas ... 

One gram-mole (or pound-mole) is the mass in grams (or pounds) of a given compound that is numerically equal to its molecular weight (M). Thus, the number of pound-moles of a compound contained in a mass of m pounds is m/M. 

In this very useful form, Rg is known as the universal gas constant, has a value of 1545 and is the same for all gases. The specific gas constant (i i) for any gas can be obtained by dividing 1545 by the molecular weight. Rg is only equal to 1545 when gas pressure (p) is in PSIA volume (y) is expressed as cubic feet per pound mole and temperature (T) is in Rankine or absolute, i.e. °F + 460. 

Industry-unit How measured Cubic feet per pound mole kmol per mscf... 

Two hundred and twenty-five pound moles of liquid A at 70 °F are fed to the first reactor each minute. The fraction of the inlet A converted to R in the first reactor is such that the effluent from the first reactor leaves at 85 °F. The temperature of the stream leaving the second reactor is 100 °F. The mole density of A in the entrance stream is 1.5 lb moles/ft3. 

The reaction is reversible and exothermic. The reaction stoichiometry is A -> R. One hundred pound moles of pure liquid A are fed to the... 

The mass velocity G will be constant over the reactor length, and this quantity may be determined from the specified production rate and the reactor dimensions. To produce 50 tons/day of 100% H2S04, the number of pound moles of S02 that must be oxidized per second is ... 

T is expressed in degrees Kelvin r is expressed in pound moles per pound of catalyst per hour... 

A tank with volume of 2.4 cu ft is filled with methane to a pressure of 1500 psia at 104°F. Determine the molecular weight and specific gravity of the gas and the pound moles, pounds, and density of gas in the tank. 

EXAMPLE 6-1 Calculate the volume occupied by one pound mole of natural gas at standard conditions. 

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