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1. A centrifugal water pump with a 200 mm diameter impeller rotates at 1750 rpm. Its width is 20 mm and the blades are curved backwards so that β2 = 60° . If the flow enters the pump in the axial direction, and the volume flow rate is 100 L/s, estimate the power input if the pump is 100% efficient.
2. A centrifugal pump is designed to have a discharge of 600 gpm against a head of 200 f t. The impeller outlet diameter is 12 in., and its width is 0.5 in.. The outlet blade angle is 65° . What is the design speed and the minimum horsepower required to drive this pump?
Estimate the theoretical carbonaceous and nitrogenous oxygen demand of a waste containing 50 mg/L lysine, C6H14N2O2. Assume the nitrogen is liberated as ammonia in the first oxidation step converting organic carbon to CO2.
How many grams of dry NH4Cl need to be added to 1.80 L of a 0.800 solution of ammonia, NH3, to prepare a buffer solution that has a Kb of 8.87? for ammonia is 1.8E-5.
What is the relationship between the wavelength and the frequency
Ammonium nitrate has been utilized as a high explosive because it is unstable also decomposes into several gaseous substances. The rapid extension of the gaseous substances produces the explosive force.
256g of a mixture of methane and acetylene burn in oxygen to produce 1160g of carbon dioxide and water. What was the initial mass of each reactant?
A solution made by dissolving 1.20 g of the unknown compound in 25.0 g of benzene had a freezing point of 4.7 degrees Celsius
an unknown compound contains only carbon hydrogen and oxygen cxhyoz. combustion of 6.00g of this compound produced
Calculate the molar mass of the unknown gas. Remember that the faster the rate of effusion, the shorter the time required for effusion; that is, rate and time are inversely proportional.
Why does Ph3CO-MgBr+ dissolve when HCl is added? Write a chemical equation to describe what happens.
Why is it less efficient for DNA ligase to reseal blunt ends than it is to reseal sticky ends?
According to the given data propylamine (CH3CH2CH2NH2) boils at 49 degrees C, Trimethylamine [(CH3)3N] boils at 3 degrees C;trimethylamine has reasonably high solubility in water Propylamine is entirely miscible with water; considering that isobu..
Chlorine gas can be produced commercially by passing an electric current through a con- centrated solution of sodium chloride (brine).
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