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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.
The graph above shows the heating curve of wate
It is given that the v.p. of water =233.7 mm Hg.at 70 degree Celsius then calculate the vapor pressure? express your answer in mm Hg ?
Chemistry: Reaction between Sodium Bicarbonate and Citric Acid, Question: The fizz produced when an Alka Seltzer© tablet is dissolved in water is due to the reaction between sodium bicarbonate and citric acid, according to the following equation:
A 25.0 ml sample of 0.105 M HCl was titrated with 31.5 ml of NaOH. What is the concentration of the NaOH
what is the ph of a 0.015m hcl solution?if the poh of a solution is 7.99 what is the h?what is a conjugate acidbase
Determine the titration of 100.0 ml of 0.200 M acetic acid (Ka= 1.8x10-5) by 0.100 M KOH. Compute the pH of the resulting solution after the subsequent volumes of KOH have been added.
A 46.7 mL sample of a 0.557 M aqueous hydrofluoric acid solution is titrated with a 0.225 M aqueous potassium hydroxide solution. What is the pH after 76.4 mL of base have been added
Calculate the osmotic pressure of each starting solution and that of the mixture, assuming that the volumes are additive and that both salts dissociate completely into their component ions
Provide an explanation on why the methylene unit between the two carbonyl groups is more acidic than each of the methyl groups in acetylacetone. In the reaction conditions, what is the base responsible for the deprotonation of acetylacetone
A ground state H atom absorbs a photon of light that has a wavelength of 97.3 nm. It then gives off a photon that has a wavelength of 486 nm. What is the final state of the H atom. Please explain why you choose the values you do for N1 and N2 of t..
i) The initial and final temperatures. ii) How much energy does the electrical heater and stirring paddle deposit? iii) Plot the process on P-ν (pressure-specific volume) and T-ν (Temperature-specific volume) diagrams.
What are the 6 strongest acids and what are the 6 strongest bases in general chemistry?
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