(1) Derive expressions for the concentration as a function of time for the third order and...
Problem 1 Using what we have leamed in chapter 1, derive, for a semiconductor, the expressions of The total current density Conductivity - Problem 2 Consider Germanium sample with the following characteristics the electron and hole mobility for Ge is 0.39 and 0.19 m2N.s The electron and hole effectives masses are 0.56me and 0.4 me The energy gap is 0.67 eV at T-27°C 1) 2) Find the intrinsic carrier concentration for Ge What is the resistivity of the Ge sample...
4. Given a Cobb-Douglas production function Q = 25020602. 1) Derive expressions for the average and marginal products of labour and capital; 2) Derive the partial elasticity w.t.r (with respect to) labour and capital.
The half-life of a reaction, t1/2, is the time it takes for the reactant concentration [A] to decrease by half. For example, after one half-life the concentration falls from the initial concentration [A]0 to [A]0/2, after a second half-life to [A]0/4, after a third half-life to [A]0/8, and so on. on. For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t1/2=0.693k For a...
1. Derive the second order rate law for the reaction 2 A →P, and an expression for its half life, t 1/2, in terms of the initial concentration of A. State your assumptions and show each step. [See Atkins 10th ed, 20B2; Atkins 11th ed, 17B2]
Areaction was found to be zero-order in A and third-order in B. Increasing the concentration of A by a factor of 3 and the concentration of B by a factor of 2 will cause the reaction rate to increase by a factor of 2 remain constant increase by a factor of 6 increase by a factor of 8
Please show all work. Should derive answer using third order statistic. 12. Suppose the length of time, in minutes, that you have to wait at a bank tellers window is uniformly distributed over the interval (0, 10)· If you go to the bank four times during the next month, what is the probability that your second longest wait w be less than five minutes?
For the following reaction, the concentration of A and the amount of time required to decrease that concentration to one-half of the initial concentration, (vz, are directly proportional. Therefore, a decrease in concentration of A shows a proportional decrease in the half life, tv2. A products What is the order of this reaction? 2 If the rate constant for this reaction is o.0493 M s-1at 400 C, what is the half-life of this reaction, given an initial concentration of 0.821...
Which of the following statements is true concerning second order reactions? A. A plot of concentration vs. time will be a straight line. B. A plot of the reciprocal of concentration vs. time will be a straight line. C. A plot of ln of the concentration vs. time will be a straight line. D. None of the statements are true. E. The half-life of the reaction may be calculated using the equation: t1/2 = 1/k.
1. (a) Plot the concentrations listed below as a function of time. Then, plot any other graphs required to verify that the data is consistent with a first-order reaction. time concentration (in minutes) (in moles / liter) 0.00 1.0000 1.00 0.8607 2.00 0.7408 3.00 0.6376 4.00 0.5488 5.00 0.4724 6.00 0.4066 7.00 0.3499 8.00 0.3012 9.00 0.2592 10.00 0.2331 (b) Determine the value of the rate constant k. Write an expression for the rate law. (c) Determine the time at...
The concentration of gaseous NO2 was measured as a function of time as it was decomposing. 2NO2(g)--> 2NO(g)+O2(g) The slope and the y-intercept of the linear plot of [NO2]^-1 vs time are, respectively, 0.274 M^-1•s^-1 and 172M^-1. What is the half-life of the reaction that was investigated? Answer choices: 2.53s 47.1s 628s 314s