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A large reservoir maintains air at 6.8×105 P a and 15°C. The air flows isentropically through a convergent and divergent nozzle to another large reservoir where the back pressure can be varied. The area of the throat is 25 cm2 and the area of the nozzle exit is 100 cm2 . Find
(a) The maximum mass flow rate through the nozzle.
(b) The two values of the Mach number at the nozzle exit corresponding to this mass flow rate.
(c) The back pressures required to produce these Mach numbers.
What is the millimolar concentration of dissolved oxygen for a lake or stream under the partial pressure of oxygen and a temperature of 12 degrees Celsius?
What volume (in mL) of 0.220 M NaOH should be added to a 0.135 L solution of 0.028 M glycine hydrocholoride
Draw a stick model of a water molecule. Sketch a space filling model of a water molecule, show polarity by labeling positive and negatively charged regions of the molecule.
What is the daily dose for a33-lb child?
What is the entropy of the combustion above?
If it takes 50.0 mL of 0.0250 M K2Cr2O7 to titrate 30.0 mL of a solution containing Fe2+, what is the molar concentration of Fe2+?
Problem- Provide the structure of the major organic product that results when 4-methlhexanal is heated in base and undergoes an aldol addition followed by dehydration
Completely calculate the amount of heat that is produced when containers with 200g of acetylene and 600 g of oxygen are allowed to react
Sodium benzoate is used as a food preservative. It is a weak base with a Kb of 1.59x10-10. If 33 mL of a 0.0050 M sodium benzoate solution were titrated with 19 mL of a 0.0025 M HCl solution, what is [OH-]?
If one slice of chocolate cake contains 35g of carbohydrate, 15g of fat and 5g of protein, calculate the kilocalories that each slice of cake contains.
Problem- Draw two or three resonance forms for each of the following species. Indicate the major contributor or contributors to the hybrid in each case.
Compute the freezing point depression of liquid mercury caused by dissolved sodium if the mole fraction of sodium is 0.0477. For Hg(l), Tm = -39oCand DHfus= 2331 J mol-1
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