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1. A silicon sample is oxidized in dry O2 at 1200? C for one hour.
(a) What is the thickness of the oxide grown?
(b) How much additional time is required to grow 0.1 µm more oxide in wet O2 at 1200? C?
2. Find the parameter γ for the photoresists shown in Figure 2.13.
A reaction can be thermodynamically favorable, but kinetically unfavorable. What does that mean? When is reaction thermodynamically or kinetically favorable or unfavorable? Choose a suitable reaction and draw energy diagrams to explain these conce..
50.50 mL of 0.116 M HF is titrated with 0.1200 M NaOH. How many mL of the base are required to reach the equivalence point? (Ka for HF is 6.8 x 10-4)
explain why in contrast to meso-stilbene dibromide the dibromidedl-stilbene dibromine colorless exists in two
Predict which of the following compounds has the greatest lattice energy. A. SCl6 B. AlCl3 C. NaCl D. MgCl2 E. PCl5
More gas is then added to the container until it reaches a final volume of 13.3 L. Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.
Number of exhaled molecules, Total mass of the atmosphere is equivalent to that in a layer 7 kilometer deep with density equal to the density at the surface
If the solution has the same density as well as specific heat as water, explain what is delta H for this reaction per mole of H2O produced. Presume that the total volume is the sum of the individual volumes
The total mass of pure metals produced = 0.4684 grams. compute the mass percent of CuCl2, and AgNO3, FeCl3 in the original mixture.
Find the equilibrium constant for the reaction- A(g) + B(g)--> 2C(g) at 25C when k equals 1.4 x 10^-12 M^-1S^-1 for the reaction A(g) + B(g)-->2C(g) at 25C and k equals 2.7 x 10^-13 M^-1S^-1 for the reaction: 2C(g)-->A(g) + B(g) at 25C.
How many grams of epinepherine barbitrate (m.w. 333) should be used in preparing 495 mL of an opthalmic solution containing the equivalent of 3 % epinepherine (m.w. 183)
The volume of a certain bacterial cell is 1.60 µm3. What is the volume of 105 cells in liters (L)?
A substance, A2B, has the composition by mass of 60% A and 40% B. What is the composition of AB2 by mass?
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