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For UV light of wavelength 254 nm, calculate the frequency and the amount of energy absorbed by a single molecule when it absorbs a quantum of this light. (Remember ??=c, where c = 3.00 x 108m/s and E = h?, where h = 6.63 x 10-34 J·s) 1nm = 1x10-9m.
a. ? = 8.5 x 10-7 s-1 and E = 5.6 x 10-40 J
b. ? = 8.4 x 10-16s-1 and E = 5.6 x 10-49 J
c. ? = 1.2 x 106s-1 and E = 8.0 x 10-28 J
d. ? = 1.2 x 1015s-1 and E = 7.8 x 10-19 J
HC9H7O4(aq) + H2O(l) image from custom entry toolH3O(aq) + C9H7O4(aq) Two aspirin tablets, each containing .325 g aspirin(along with a nonreactive "binder" to hold the tablet together), are dissolved in 200.0 mL of water. Calculate the pH of the ..
The mass percent of glucose(C6H12O6) in human blood is 0.102%. The density of human blood @ 37 C is 1.08 Kg/L. Assume the mixture of non-glucose components in blood is the solvent.
a 0.500 l solution of 7.50 m hydrochloric acid is used to neutralize a 250.0 g sample of calcium hydroxide. calcium
What is the composition of the purge stream. What is the flow rate of gas leaving the separator. What is the flow rate of gas in the recycle line.
What is the theoretical economy of heating A mixture of sodium carbonate and sodium bicarbonate ? sodium carbonate is the desired product and water and carbon dioxide are the undesirable wastes.
Plot NO2 versus time, ln NO2 vs time, and 1/NO2 vs time. Which graph yields the best straight line? what is the reaction order with respect to NO2? Briefly explain
What is the theoretical yield of hydrazine, in grams, prepared from the reaction of 150.0mL of 1.01 M NH3 (aq) with 50.0 mL of 1.25 M NaOCl (aq)?
calculate the final concentration of the solution in each of the following: a)water added to 10.0 mL of a 3.50 M KNO3 solution gives a volume of .250 L. b)a 5.00-mL sample of a 18.0 M sucrose solution is diluted with water to 100
calculate the molarity of acid (or base) remaining in solution when 20mL of 0.400M HNO3 is added to 16.3mL of 0.258M NaOH?
A given compound has the following solubility properties. At room temperature, it is souble in diethyl ehter but insoluble in both ethanol and water At high temperatures,
Predict whether the entropy change is positive or negative for each of the following reactions. Give reasons for your predictions.
Draw the boundary surface diagrams for the following atomic orbitals, including the appropiate axes. a) 4py
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