Physics, 18.09.2019 04:00 rileyeddins1010
1) gas a diffuses through a planar gas film (z1) to a flat catalyst surface (z2), where it reacts as follows: 1� → 3�. gas b diffuses back a distance � to the point (z1). a) derive the eq. for na for a very fast reaction using ya1, ya2, concentration (ct), and �. b) for dab = 4.3 x 10-4 m2 /s, ya1=0.83, pt=101 kpa, �= 95 µm, 625 k, solve for na (kg mol/s. m2 ). c) repeat part (a) but for a first-order reaction where k’1 is the reaction rate constant (assume units of k1’ of m/s). d) calculate na and ya2 for part (c) where k’1 =0.05 m/s. (note: this part requires a few iterations by trial and error
Answers: 3
Physics, 22.06.2019 13:50
The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?
Answers: 2
Physics, 22.06.2019 18:30
How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters
Answers: 2
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
Physics, 23.06.2019 00:50
which statements describe the image? check all that apply.the wood is releasing argon gas.this information is useful for dating ancient rock.the process works only with organic matter.the element has a half-life of 5,730 years.this shows the half-life of carbon-19.
Answers: 1
1) gas a diffuses through a planar gas film (z1) to a flat catalyst surface (z2), where it reacts as...
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