The forward-bias current
The forward-bias current in a GaAs pn-junction at T = 300 K is ID = 15 mA. The reverse-saturation current is IS = 10^-19 A. Determine the required forward-bias diode voltage.
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A sealed flask contains 0.65 g of water at 28 ^circ {rm{C}}. The vapor pressure of water at this temperature is 28.36 {rm mmHg}.
A certain monoprotic weak acid with Ka = 6.8 × 10-7 can be used in various industrial processes, but is no longer used in chemistry teaching labs because it tends to explode when it gets old. (a) What is the [H+] for a 0.748 M aqueous soluti
A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.33 moles of KOH into 800 mL of solution. What is the pH of this buffer? Ka = 5.9 × 10-6 for HA.
A 2 L bottle of a carbonated beverage (Coke) at 20 °C is placed in a cooler with 10 L of saturated liquid water and 30 kg of ice (both at 0.01 °C).
a 0.5118 gram sample of CaCO3 is dissolved in 6 moles of HCL, and the resulting solution is diluted to 250.0 ml in a volumetric flask. How many moles of Ca2+ are in a 25.00 ml aliquot of the solution.
Ethylene glycol, antifreeze, has a density of 1.11 g/cm^3. What is the mass, in grams, of 410 mL of ethylene glycol?
Calculate the temperature change in the water upon complete melting of the ice. Determine how much heat is absorbed by the melting ice and then use q =mC Delta T.
A venturi meter is inserted in a pipe whose diameter is 12 in. The diameter of the meter at its throat is 6 in. and the factor C1 for the meter is .980.
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The hospital board of directors has made a request for you to provide and present a report to them on government and private sector healthcare financing models.
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The researchers adjusted their analyses to account for several potential confounding variables, including gender, age, race/ethnicity, parental education
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