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Potassium chromate (K2CrO4) is manufactured in a process in which 1.25 kg/s of a solution that is 33.3wt% K2CrO4 in the fresh feed stream is mixed with a recycle stream containing 36.36% K2CrO4, and the combined stream is fed to an evaporator. The concentrated stream that leaves the evaporator is 49.4% K2CrO4; this stream is fed to a crystallizer in which it is cooled (causing crystals of K2CrO4 to come out of the solution) and then filtered. The filter cake consists of K2CrO4 crystals and a solution that contains 36.36wt% K2CrO4. The crystals formed account for 95% of the mass of the total filter cake. The solution that passes through the filter, also 36.36wt% K2CrO4, is the recycle stream. Calculate the weight of water removed is the evaporator, the rate of production of crystalline K2CrO4, the ratio (kg recycle)/ (kg fresh feed), and the feed rates that the evaporator and the crystallizer must be designed to handle.
three solutions are mixed together to form a single solution. on e contains 0.2 mol pbc2h3o22 the second contains 0.1
For the reaction: 2N2O5(g) -> 4NO2(g) + O2(g) at the time when N2O5 is being consumed at a rate of -6.0 × 10-4 M/s, what is the rate at which O2 is being formed?
Spilling some of the reaction mixture. b.Adding too much baking soda. c.Adding too much vinegar. d. Not allowing the reaction to go to completion.
determine why the 2s and 2p orbitals on hydrogen are degenerate and they are not in the case of lithium.the formation
A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.30 nm. It then gives off a photon having a wavelength of 1820 nm
If the x-component of the velocity of an electron can be measured only to a precision of , what is the minimum uncertainty of the position of the electron in the x-direction. ( )
Exactly 313.5J of heat energy will raise the temperature of 10.0 g of a metal to 60.0 C. IF the specific heat of the metal is 0.896J/gC, what was the initial temperature of the Metal
A proton in a linear accelerator has a de Broglie wavelength of 143 pm. What is the speed of the proton?
Calculate the dye concentration. (3) 5.00 mL of 0.00500 M ferric nitrate is added to 5.00 mL of nitric acid and 10.0 mL of 0.00250 M thiocyanate solution. Calculate the initial Fe3+ concentration before reaction.
What volume of a 0.50 M KOH solution is needed to neutralize completely 10.00 mL of a 0.30 M H2SO4 solution? The neutralization reaction is 2KOH + H2SO4 → K2SO4 + 2H2O.
A Technologist is performing a colorimetric assay with a ELISA absorbance reader. The assay's color, when tested in a standard spectrophotomer is linear to an absorbance
A buffer initially contains 0.10 mol acetic acid and 0.13 mol of sodium acetate in 1.00 L. 0.02 mol of potassium hydroxide is added to the buffer
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