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A spherical droplet of methane (2cm in diameter) is burned in pure oxygen atmosphere at 2000 K and 3 atm. Oxygen is transferred to the surface by diffusion, where it is consumed by the reaction:
CH4 + 2O2 → 2H2O+CO2
This surface reaction can be assumed to be instantaneous. At 2000 K, the diffusion coefficient for each of the species (H2O, CO2 and O2) in the remaining species can be assumed constant at 3.54 x 10-4 m2/s. Assume ideal gas behavior, a one-dimensional diffusion with constant properties, negligible CH4 evaporation and negligible convection. Calculate the steady-state O2molar consumption rate in mol/s.
An artillery shell of mass 10.00 kg, lying at rest on the ground, accidentally detonates, exploding into three pieces of shrapnel. Calculate the speed of the third piece of shrapnel
Explain how equation applies to nuclear fission. In your answer illustrate your explanation with an example, being sure to distinguish between mass and mass number, and explain how a nuclear equation differs from a chemical equation.
A point charge of +6.00 microC is located on the x-axis at x= 5.00m , next to a spherical surface of radius x= 4.00m centered at the origin. Calculate the magnitude of the electric field at x= 4.00m
A piano tuner stretches a steel piano wire with a tension of 964N . The wire is 0.400m long and has a mass of 3.60g. What is the frequency of its fundamental mode of vibration
A rocket accelerates upwards from rest at 20 m/for 4 seconds then its engine shuts off. find the maximum height reached by the rocket
A heat pump uses 200 J of work to output 300 J of heat into a heat reservoir at 200 K. What is the coefficient of performance for the heat pump
An 80 centimeter long wire is made by welding a 2.30 mm diameter, 20 centimeter long copper wire to a 2.30 mm diameter, 60 centimeter long iron wire. Determine the resistance of the composite wire in milliohm
Gas is confined in a tank at a pressure of 11.7 atm and a temperature of 30.0°C. If two-thirds of the gas is withdrawn and the temperature is raised to 77.0°C, what is the pressure of the gas remaining in the tank? atm
A rocket accelerates vertically up from ground level from rest at 30 m/s^2 for 30 s; then runs out of fuel. What is the rocket's final altitude? (Ignore air resistance) .
A civil engineer wishes to plan a curved exit ramp for a highway in a way that a car will not have to rely on friction to round the curve without skidding. In the other words, a car moving at the designated speed can negotiate the curve even while th..
The club was in contact with a ball, initially at rest, for about 0.0014 s. find the average force exerted on the ball by the club
plane polarized light of intensity I0 is passed through two polarizers, the first one at 45 degrees to the original plane of polarization, what intensity is transmitted
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