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Consider a conventional NPN BJT with uniform doping. The base-emitter junction is forward biased, and the base-collector junction is reverse biased.
(a) Qualitatively sketch the energy band diagram.
(b) Sketch the minority carrier concentrations in the base. emitter. and collector regions.
(c) List all the causes contributing to the base and collector currents. You may neglect thermal recombination-generation currents in the depletion regions.
If 4.21*10^-3 moles of Ca^2+ react with excess PO4^3- to form calcium phosphate, how many moles of the solid will form.
This flask is then connected to a second flask, which is evacuated and has a volume of 630. mL. The gas is subsequently allowed to fill both flasks. What is the final pressure of the gas in the first flask? What is the final pressure of the gas in..
Caluclate the energy requried to raise the temperture of 1.0 mol Ag by 1.0 C. c.it takes 1.25kj of energy to heat a sample of pure silver from 12.0 C to 15.2 C. Calculate the mass of the sample of silver.
calculate the ph of solution formed by mixing 150 ml of 0.10m hc7h5o2 with 100 ml of 0.30m nac7h5o2. the ka for hc7h5o2
Question 1: What percent of the Earth's radius is 20 kilometers?
A 12 oz can of soft drink (assume m=340g) at 25 deg C is placed in a freezer where the temperature is -12 deg How much C. How much energy must be removed from the soft drink for it to reach this temperature?
Ni(s) +4CO(g) Ni(CO)4(g) Given that the standard free energies of formation of CO9g) and Ni(CO)4 are -137.3 kj/mol and -587.4 Kj/mol, respectively, calculate the equilibrium constant of the reaction at 80C. Assume that DeltaGf is temperature ind..
Explain how many stereoisomers are probable for each of the following structures. Draw them and name each by the R-S and E-Z conventions. A. 4-methyl-2, 5-heptadiene B. 1, 2, 5-trichloro-3-hexene.
You have a 1.0 mL sample of unknown concentration that requires 8.0 mL of titrant to change the color of the solution. How many mg of ascorbic acid are in your unknown sample
calculate the change internal energy (E) for a system that is giving off 45.0kJ of heat and is performing 855J of work on the surroundings.
Determine the molar mass of each of the following gases: 0.93g of a gas that occupies 410mL at 0 °C and 1.00 atm (STP). 1.26g of a gas that occupies 1.00L at 0 °C and 760 mmHg (STP). 1.54g of a gas that occupies 1.40L at 680mmHg and 22.0°C. 3.0g of a..
What partial pressure of O2 above the water is needed to obtain this concentration at 10 °C? (The Henry's law constant for O2 at this temperature is 1.71 X 10-3 mol/L-atm.)
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