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A photocell is a device used to measure the intensity of light. In a certain experiment, when light of wavelength 630 nm is directed onto the photocell, electrons are emitted at the rate of 2.6 X 10-12 C/s (coulombs per second). Assume that each photon that impinges on the photocell emits one electron. How many photons per second are striking the photocell? How much energy per second is the photocell absorbing?
What is the most important effect of antisymmetrization in electon-electron interaction? Where did antisymmetrization come from? Explain from different statistics of distinguishable particle, indistinguishable particle
When 20.4 grams of the strong electrolyte sodium phosphate are dissolved in 143 grams of water, a. What is the molality of the solution. What is the %w/w of sodium phosphate
Ignore the volume of water, and determine the final volume of the reaction mixture at 1.00 atm and 298 K if the reaction goes to completion.
How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of 2.00 Amperes?
Calculate the mass of propylene glycol that must be added to 0.330 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
Presume that gasoline can be represented as consisting completely of C8H18. Gasoline has a density of 0.85 g cm- 3. Presume that combustion of CgH18 leads to CO2 and H2O. Explain how many kilograms of CO2 does your driving contribute to the atmosp..
Addition of 0.0125 mol HCL to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer results in a pH = _______? Ka of formic acid is 1.8x10^-4
To what volume should you dilute 122 mL of an 8.05 M CuCl2 solution so that 51.0 mL of the diluted solution contains 4.61 g CuCl2
A light green liquid, and informed that someone accidentally spilled a few small flecks of an intensely green-colored crystalline dye in a rather expensive solvent, so it doesn't make sense to throw away the very slightly contaminated solvent.
0.375 g of a monoprotic acid mm 245 gmol is dissolved in water to produce 25.0 ml of a solution with ph 3.28.
The subsequent potential readings were obtained: (1) 2.00 × 10-4 M A+ + 1.00 × 10-3 M B+, +237.8 mV; and (2) 4.00 × 10-4 M A+ + 1.00 × 10-3 M B+, +248.2 mV. Calculate KA/B. The electrode response is 56.7 mV/decade.
calculate the freezing point and boiling point of the following aqueous solutions assuming complete dissociation.a.
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