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When a bulkheterojunction organic solar cell was irradiated with monochromatic light of 8 mW/cm2, it showed the short circuit photocurrent of 3 mA/cm2. Find at which wavelength (nm) the monochromatic light was irradiated. The external quantum efficiency was 60%.
Using Henry's law, calculate the molar concentration of in the surface water of a mountain lake saturated with air at 20 and an atmospheric pressure of 660 torr.
What volume of O2(g) is required in the combustion at 25C and 1.00 atm if 9,818kJ are evolved?
An organic liquid is a mixture of methyl alcohol and ethyl alcohol. A 0.220g sample of the liquid is burned in an excess of O2(g) and yields 0.342 g CO2(g). What is the mass of methyl alcohol in the sample?
Which ions were present in the original solution? What are the net ionic equations for each reaction that occured?
What type of energy, kinetic or potential, is contained in chemicals? What aspect of chemicals is changed during a chemical reaction such that reactions relate to chemical energy?
What is the change in the internal energy of the system as the system travels down the isotherm from state A to state C? Change in internal energy down the isotherm
If the heat of combustion for a specific compound is -1310kj/mol and its molar mass is 60.87 g/mol, how many grams of this compound must
What are the Bi and Bi+ quantum numbers of the electron removed when Bi is ionized to Bi+?
Explain why the dichlorofluoresceinate anion is adsorbed onto the surface of the AgCl precipitate
sodium phosphate is mixed with 400.0ml of 0.255M barium chloride. What is the mass of the solid produced?
What is the pH of a buffer solution that is 0.0100 M in hypochlorous acid, HCIO, and 0.0300 M in sodium hypochlorite, NaCIO? (the Ka for HCIO is 3.5 x 10-8.)
The specific heat capacity of a certain monatomic solid is 0.392J*k^-1*g^-1. The chloride of this element (XCl2) is 52% chlorine by mass.
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