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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?
Assuming the solution has a heat capacity of 4.18 J/°Cg and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol."
The slope of the Gran Plot for the titration of KHP with NaOH was found to be -1E-05. Use this to determine ka2. Other values that may be of importance: concentration was measured
Two substances are mixed together. Define how the observer could determine if this reaction is just a mixture or an actual chemical reaction. Give an instance of two reactants that would form a mixture as well as two reactants that would form a ch..
The drop of an electron from a high level to the ground state in a hydrogen atom would be most closely associated with (a) long wavelength radiation
What is the molarity of a nitric acid solution if 43.53 mL 0.1000 M KOH solution is needed to neutralize 20.00 mL of the acid solution
Betty, in a hurry to finish part 2 of the experiment, did not let the NaOH solution from part 1 cool at all. She just added it to the HCL solution and took the average temperature as the initial temperature of the mixture.
Write the ground-state electron configurations for the following elements. (Type your answer in noble gas notation using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.)
Which of the following metals will be oxidized by Pb(NO3)2: Zn, Cu, Fe? Write the balanced molecular, ionic and net ionic equations for the reaction.
If a procedure calls for 2.0mL of concentrated nitric acid, what are the mass and moles of HNO3 actually used in the reaction
For each molecule, draw the Lewis structure that satisfies the octet rule for that molecule and also draw the Lewis structure that minimizes formal charges for the molecule as well. For the Lewis structure that satisfies the octet rule
Calculate the mass/volume percent of a NaCl solution in which 160 grams of NaCl is dissolved in enough water to give a total volume of 4.71 L.
Determine the ammonium ion concentration of a solution that results when 4.53 g of (NH4)2SO4 is dissolved in 100 mL of water.
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