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The Arrhenius equation was originally developed for comparing rates of chemical reactions. Compare the rates of a chemical reaction at 20 and 100°C by calculating the ratio of the chemical reaction rates. Assume that the activation energy for liquids in which the chemical reaction is conducted is 10 kJ/mol.
a rigid tank with volume 0.25 m3 contains 0.5 kg of water at 100 c. a 3 kw heater is energized. calculate the time
a child a is swinging from a swing that is attached to a trolley that is free to move along a fixed rail. letting l
steam is the working fluid in an ideal reheat rankine cycle. steam enters the first-stage turbine at 8.0 mpa 480oc and
bar ab of mass m and mass moment of inertia i 112ml2 is constrained to move within the channel as shown. the bar is
air enters an adiabatic nozzle steadily at 300 kpa 200degcand 28 ms and leaves at 100 kpa and 168 ms. the inlet area of
crates a and b weigh 100 lb and 50 lb respectively. if they start from rest determine the their speed when t 5s. also
Water at 200KPa with a quality of 25%has it temperature raised to 20degrees celcius in a constant pressure process. What is the new quality and volume?
A mixture of dry air and water vapor is at a temperature of 21C under a pressure of 101.3 kPa.The dew point temperature is 15C.(Ps= saturation pressure at 15C=1.7044 kPa;Pd=saturation pressure at 21C=2.4861 kPa) find humidity ratio and relative hu..
a rankine cycle is used to generate electricity with a total plant capacity of 65 mw. heat from the condenser is
a bead a weighting 2lb slides on a quarter-circular frictionless bar bc with radius. the bead is supported by a cable
air at 800 kpa and 400oc enters a steady-flow nozzle with a low velocity and leaves at 100 kpa. if the air undergoes an
a heat pump will be used to heat a building during the winter and will then cool the same space during the summer. the
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