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When a metal was exposed to light at a frequency of 4.54× 10^15 s-1, electrons were emitted with a kinetic energy of 3.10 × 10^-19 J. What is the maximum number of electrons that could be ejected from this metal by a burst of light (at some other frequency) with a total energy of 5.04 × 10^-7 J?
Estimate dissociation energy of HF using simpe additivity rule If given that d(H-H) and D(F-F) IN H 2 is 336kj/mol and F2 is 258 kj/mol
The pH of uncontaminated rain water is about 5.6. The pH of rain falling in Cleveland, OH is 4.2 and that in Omaha, NE is 5.5. What is the concentration of hydrogen ions in the rainfall of each city? [H] 6.3 ^ -5 for Cleveland.
Calculate the mass percent of methanol, ethanol, and MTBE, that must be present in gasoline to yield a mixture of 1.8% oxygen by weight.
Determined if CS 2 of 2.500 grams mix with an excess of chlorine gas , 9.310 Kilo joule of heat is evolved. What sort of reaction is this , Is the reaction exotermic also find out delta H for the reaction?
Liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 9.1 g of octane is mixed with 22.7 g of oxygen.
How many grams of water can be cooled from 36 degrees celsius to 23 degrees celsius by the evaporation of 53g of water.
How many kilograms of methane (CH4) are in perfectly insulated piston with the following properties: Volume = 2 cubic meters.
Given the following data table of average bond enthalpies, estimate the ΔH^rxn for the reactions 2H2+O2-- 2H2O. What is the hybridization of xenon in each of your Lewis resonance structures?
If a piece of Calcite (Calcium Carbonate) is put into the lake, would it tend to dissolve? Calcium carbonate solubility is 10^-8.35 M2, and the measured concentration of calcium ion is 0.1mM (millimolar)
A mass of 57 g of lead fishing weight absorbs heat of 146 Calories. Determine its final temperature If its initial temperature =48 Centigrade,?
If equal masses of N2 and H2 (7.00 grams each) are combined to produce ammonia NH3, how many grams of ammonia could be produced at maximum yield.
Considering the given equation 4 C3H5N3O9---> 6 N2+ 12 CO2 + 10 H2O + O2,This reaction generates many gaseous products and a large amount of heat determine what is the maximum amount of Oxygen.
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