Explain the activation energy ea for the reaction
The first-order isomerization reaction: cyclopropane ? propene, has a rate constant of 1.10 × 10-4s-1 at 470°C and 5.70 × 10-4s-1 at 500°C. What is the activation energy, Ea, for the reaction?
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An aircraft engine is fitted with a single-sided centrifugal compressor. Estimate the stagnation pressure at the compressor outlet when the massflow is 3.60 kg/s.
A uniform electric field of magnitude 435 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.10 cm. What is the change in potential energy associated with the electron?
An aqueous solution containing 9.03 g of an optically pure compound was diluted to 200.0 mL with water and placed in a polarimeter tube 20.0 cm long. The measured rotation was -2.85° at 25 °C.
Determine the required mass flow rate of air for a net power output of 90 MW, assuming both the compressor and the turbine have an isentropic efficiency of (a) 100% and (b) 80%.
For a turbine efficiency of 86%, determine (a) the fraction of the turbine work output used to drive the compressor and (b) the thermal efficiency.
A basketball is thrown horizontally with an initial speed of 4.50 m/s. A straight line drawn from the release point to the landing point makes an angle of 30.0 degrees with the horizontal. What was the release height?
A 28.0g sample of an unknown metal at 99.0c was placed in a constant pressure calorimeter containing 85.0g of water at 24.0c. the final temperature of the system was found to be 28.4c.
To what elevation, in m, would a 1000-kg mass have to be raised from zero elevation relative to the reference environment for its exergy to equal the exergy increase of the slab?
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