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What is the photoelectric effect? What can you conclude about the nature electrons in an atom from this phenomenon? Discuss the experiment that brought this effect to light. What is the Heisenberg Uncertainty principle? How did this change how we view electrons around a nucleus? Does this support the Bohr Theory? Discuss orbitals.
How would you prepare 250mL of a buffer having a pH of 3.60 using 0.500M NaOH and 0.500M of HNO2. Would you calculate the molarities of the conjugate acid and base pair and then somehow get the volumes from that
Napthalene has a log Kow of 3.33. Estimate its soil-water partition coefficient normalized to organic carbon.
Write a balanced equations and include the phase of the compound (aq or s) , then write a complete ionicequation and if there is a phase change you need to then write a net ionic equation and list the spectator ions.
Predict the aqueous phase equilibrium concentration of phenanthrene at 25*C if the values for this compound are Cs = 1.1 mg/L, P^v = 1.6 x 10^-7 atm, KH = 4.0 x 10^-5 atm*m^3/mol, and logKow = 4.52.
A gas stream that contains 1.50 mole% CO2 flows through a pipeline. 20.0 kg/min of CO2 is injected into the line. A sample of the gas is drawn from a point in the line 10 meters downstream of the injection point and found to contain 2.3 mole% CO2.
Calculate the pH of 9.2E-8 M NaOH, ignoring activity coefficients. Report the pH using the correct number of decimal places.
the compound L-erythrose 4-phosphate was dissolved in 20 mL of chloroform and the solution was placed in a cell with a 20.0 cm path length, an observed rotation of 100? was found. Calculate the specific rotation, [?]D for L-erythrose 4-phosphate? ..
Some wastewater has a BOD5 of 150 mg/L. The reaction rate is 0.23/d. What is the ultimate carbonaceous BOD
a 51.0 g sample of ethylene glycol hoch2ch2oh is dissolved in 540.0 g of water. the vapor pressure of water at 32degc
Compound A --> Compound B if you start with 10.0 mL of Compound A and obtain 9.0 g of Compound B. Density of Compound A = 0.75 g/mL MW of Compound A = 150. g/mol MW Compound B = 300.
Alfred bought a new graduated cylinder for his chemistry class. It holds 416 milliliters of liquid. If the cylinder has a radius of 4 cm, then how tall is the cylinder?
What is the kinetic energy of the emitted electrons when cesium is exposed to UV rays of frequency 1.4x10^15Hz
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