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A 0.0809-g sample of a purified organic acid was dissolved in an alcohol-water mixture and titrated with coulometrically generated hydroxide ions. With a current of 0.0441 A, 266 s was required to reach a phenolphthalein end point. Calculate the equivalent mass of the acid.
The 60-W fan of a central heating system is to circulate air through the ducts. The analysis of the flow shows that the fan needs to raise the pressure of air by 50 Pa to maintain flow. The fan is located in a horizontal flow section whose diameter i..
Determine the maximum idealized power output using Carlin's formula for a turbine of 28 m diameter in a wind regime with an average wind speed of 10 m/s and an air density of 1.22 kg/m3.
a particle travels along a straight line with an acceleration of a 10-0.2s ms2 where s is measured in meters.
The ball A is moving with constant velocity of 2 m/s and hits ball B. The ball B and C are at rest and they are connected with an unreformed spring with k= 100 N/m. All three balls are identical with 200 kg mass. Assume the impact between A and B is ..
one kilogram of water contained in a sealed piston-cylinder assembly initially at 160degc and 200 kpa undergoes an
an aluminum 2024 t3 bar of unit cross-sectional area is subjected to a tensile force in the longitudinal direction. if
For the crank-shaper mechanism shown in Fig. 2.14, graphically determine the length of stroke and the time ratio of advance to return. Use a scale of 3 in. = 12 in., and let O2O4 = 16 in., O2A = 6 in., O4B = 26 in., BC = 12 in., and the distance f..
a stainless steel aisi 304 tube is used to transport a cold liquid through a warm room. the tube has an inner diameter
The main bearing on an engine crankshaft is lubricated with engine oil. The torque due to friction T0 depends on shaft diameter D, rotational speed, lubricated viscosity, and density. Use dimensional analysis to derive an expression for torque.
air from inside a house enters a steady-flow heat exchanger with a volume flow rate of 200 m3min at 15degc 100kpa and
air at 30 celcius and 2 mpa flows at steady state in a horizontal pipeline with a velocity of 25ms . it passes through
Consider a flat plate mounted in the test section of a supersonic wind tunnel – assume the nozzle is perfectly expanded. The plate is at an angle of attack of -10° and the static pressure on the bottom surface of the plate is 1.0 atm. The nozzle thro..
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