The irreversible gas-phase reaction A +B → C + D is carried out in an isothermal packed bed reactor. The feed is equimolar, with CA0 = CB0 = 2 mol/L. The initial volumetric flow rate is 4 L/s. The reaction is first order with respect to A and first order with respect to B, and the rate constant is 0.01 L mol-1 s-1. The pressure drop parameter, α, is 0.0015 kg-1. Starting from the differential form of the design equation, what is the percent conversion of A, expressed to one decimal place. if 400 kg of catalyst are used in the reactor? Note that this problem may be solved either using a math solver (Matlab, Polymath, etc) or by hand. You are encouraged to try both methods.

What are similarities and differences of reflection, refraction, diffraction and absorption?

Aheat engine running backward is called a refrigerator if its purpose is to extract heat from a cold reservoir. the same engine running backward is called a heat pump if its purpose is to exhaust warm air into the hot reservoir. heat pumps are widely used for home heating. you can think of a heat pump as a refrigerator that is cooling the already cold outdoors and, with its exhaust heat qh, warming the indoors. perhaps this seems a little silly, but consider the following. electricity can be directly used to heat a home by passing an electric current through a heating coil. this is a direct, 100% conversion of work to heat. that is, 19.0 \rm kw of electric power (generated by doing work at the rate 19.0 kj/s at the power plant) produces heat energy inside the home at a rate of 19.0 kj/s. suppose that the neighbor's home has a heat pump with a coefficient of performance of 4.00, a realistic value. note: with a refrigerator, "what you get" is heat removed. but with a heat pump, "what you get" is heat delivered. so the coefficient of performance of a heat pump is k=qh/win. an average price for electricity is about 40 mj per dollar. a furnace or heat pump will run typically 200 hours per month during the winter. what does one month's heating cost in the home with a 16.0 kw electric heater? what does one month's heating cost in the home of a neighbor who uses a heat pump to provide the same amount of heating?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island