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To make an industrial solvent, benzene(C6H6) is provided at a molar flow rate of 1140 kgmol/hr. Toluene (C7H8) is also added to the benzene at a rate of 213 kgmol/hr to enhance the solvent properties. Finally, it is necessary to add phenol(C6H6O) so that the final solvent production rate(mass flow rate) is 115000 kg/hr. At what mas flow rate should the phenol be added?
The acid-dissociation constant for an acid-base indicator HIn is 0.0000438. At 600 nm, the molar absorptivities are 2230 for HIn and 8900 for In-. Calculate the absorbance at 600 nm of a 1.00 x 10-4 M solution of the indicator at pH 4.81 in a 1.00..
Chloroform is an excellent solvent for extracting caffeine from water. KD = 9 for caffeine in chloroform-water at 25 degrees celecius. What weight of caffeine would be recovered from a solution of 4.0 g caffeine in 100 mL water by a single extract..
Suppose the original sample is unknowingly contaminated with a second anhydrous salt. Will the reported percent water in the hydrated salt be too high too low or unaffected by its presence. explain
Hydroxyl radical (OH) is produced from the photolysis of H2O or through reaction with excited oxygen, H2O + hν --> H + OH or O* + H2O---> 2OH
The volume of a 24.0-g sample of methane gas is 22.8 L at 40.0°C and 4.00 atm. What will its volume be at 68.0°C and 4.00 atm.
Hydrogen peroxide (H2O2) decomposes according to the equation H2O2(l) ? H2O(l) + (1/2)O2(g). Calculate Kp for this reaction at 25oC. (Ho = -98.2 kJ/mol, So = 70.1 J/K•mol)
calculate the total length obtained when you add 12.3cm, 2.75dm, and 0.450m. give the answer in centimeters
Suppose at some temperature, Kc= 6.20 X 10^8 for the reaction 2NO(g) + 2H2(g) N2 (g) + 2H2O(g). 5.00 M NO(g) and 5.00 M H2 (g) are placed in a reaction flask. Calculate the equilibrium concentration of H2 (g)
Calculate the mass of silver chloride required to plate 245 mg of pure silver. Silver chloride, often used in silver plating, contains 75.27% Ag
A solution is made by mixing 500 mL of .167 M NaOH with 500 mL of .1 M CH3COOH. Calculate the equalibrium concentrations of H+. CH3COOH, CH3COO-, OH- and Na+
The Ksp for bismuth (III) iodide is 8.1 x 10-19. Calculate its solubility, molar solubility, and concentration of each species at equilibrium.
The density of the manometer fluid is 2.75 g/cm3. The height of the manometer fluid on side 1 is 324 mm. The height of the manometer fluid on side 2 is 326 mm
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