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1. A reaction in which the pre-exponential term is independent of temperature is found to be a 100 times faster at 200 °C than it is at 25 °C. Calculate the activation energy of the reaction. What will be the reaction rate at 1000 °C?
2. A chemical reaction is found to be 15 times faster at 100 °C than at 25 °C. Measurements show that the pre-exponential term contains temperature to the power of 0.7. Calculate the activation energy of the reaction. What will be the reaction rate at 700 °C?
A control system consists of an electrical power supply, a standby battery supply which is activated by a sensor and switch if the main supply fails, a hydraulic power pack, a controller, and two actuators acting in parallel
For the hinged gate shown in Fig. 4.61, determine the magnitude, direction, and location of the force of the fluid acting on it. Complete a free-body diagram and determine the force that the gate exerts on the stop.
to cool a summer home without using a vapor-compression refrigeration cycle air is routed through a plastic pipe k0.15
an air-conditioned room requires 30 m3 min of air at 1.013 bar 20 degree c 52.5 rh. the steady flow conditioner takes
a piston-cylinder device initially contains 1.2 kg of steam with a volume of 0.2 m3. the mass of the piston is such
Thermocouples imbedded in the rod at locations 25 and 120 mm from the billet register temperaturesof 325 and 375°C, respectively. What is the temperature of the billet?
The yield strength for AA 7075-T6 IS 525 MPa and for 300 grade managing steel it's 2075-MPa. The fracture toughness values are 30 and 70-MPa (m)^1/2, respectively. Both of these materials find applications in the aircraft industry.
air enters a compressor operating at steady state with a volumetric flow rate of 8 m3min at 23degc and 0.12 mpa. the
Draw a unit cell for an HCP crystal. Show the perfect dislocations in thebase plane. Can they decompose into partials? If so, represent them by thespecial notation for dislocations.
a tank contains 1 kg of carbon dioxide at 6 mpa 60 degrees celsius and it is connected to a turbine with an exhaust at
Design a system to pump water at 140°F from a sump below a heat exchanger to the top of a cooling tower, as shown in Fig. 13.55. The desired minimum flow rate is 200 gal /min.
A 1.5 kilowatt heater is to be used to heat a room with dimensions 3.5 m × 5.0 m × 3.0 m. There are not heat losses from the room, but the room is not airtight, so that the pressure in the room is always atmospheric. Consider the air in the room to b..
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