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A laser pulse with a wavelength of 532 nm contains 3.85 mJ (milliJoule) of energy. (a) Calculate the frequency and energy per photon of the laser light. (b) How many photons are in the laser pulse? (c) What is the energy in kilojoules per mole (kJ/mol) of photon?
Calculate the wavelength in meters of light absorbed by an electron in an atom of hydrogen as it moves from n = 3 to n = 6.
The initial rate of a reaction 2A + 3B -> C + 2D was measured using different initial concentrations of A and B. Use the information in the table to determine the rate law for the reaction.
Based upon the intermolecular forces present, rank the following substances according to the expected boiling point for the substance.
Concentrated sulfuric acid is used as a catalyst for the esterfication of acetic acid in the preparation of isopentyl acetate. Why is the sulfuric acid needed if another acid,
Under what circumstances with regards to degrees of no polar characters are frenkel and schottky defects likely?
you have a 30.0 L cylinder of helium at a pressure of 132 atm and a temperature of 24 degrees Celsius. the He is used to fill balloons to a volume of 3.00 L at 1.07 atm and 29 degrees Celsius.
The density of a liquid sulfur compound is 1.14 gmL1. This compound contains 23.7% sulfur. How many milliliters of the compound must be burned to obtain 6.40 g of SO2?
A sample of compound B having an unknown concentration is measured to have an absorbance of .90 in a 1.00 cm path length cell at 500 nm. What is the concentration of B in this sample, assuming Beer's law holds
A solution of calcium ions contains 5 meq/650. cm3 of calcium ion. How many moles of calcium ion does this solution contain?
A solution containing 80. G of NaNO3 in 75 g of H2O at 50°C is cooled to 20°C. How many grams of NaNO3 remain in solution at 20° C?
A cube of a gold with a volume of 59 cm3 has a mass of 980 g. The density of pure gold is 19.3 g/cm3. What is the percent error of the measured density?
Chlorine gas can be produced commercially by passing an electric current through a concentrated solution of sodium chloride (brine).
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