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When ultraviolet radiation of wavelength 58.4nm from a helium lamp is directed on to a sample of krypton, electrons are ejected with a speed of 1.59E6 m/s. Calculate the ionization energy of krypton.
A fossil was analyzed and determined to have a carbon-14 level that is 62.0 that of living organisms. How old is the fossil
From a consideration of the Lewis structure of the thiocyanate ion, in which carbon has a double bond with both the sulfur and nitrogen atoms, what are the formal charges on the sulfur, carbon, and nitrogen atoms are, respectively
What is benzoin condensation and what are the results of it and the uses of this reaction and a detailed assignment of it
If one uses benzaldehyde rather than p-nitrobenzaldehyde in the aldol reaction the yield is extremely low, if it works at all. Offer an explanation for this result.
A feed mixture of ethanol and water is 40 mole % ethanol. The feed is at 200 degrees Celcius and is at a high enough pressure that it is liquid. It is input into the column through a valve, where is flashes. Column pressure is 1 kg/cm^2. Find the ..
an sewage from a reactor has a combination of ethanol acetone and acetonitrile with flow rate of 120 kmolh 150 kmolh
A 52.2 mg portion of tri-protonated arginine is disolved in 995.5ml of distilled ,deionized water. then 4.5mls of 0.15N NaOH is added . what is the pH of the resulting 1 litter solution
a Solution is prepared by mixing 79 mL of 5.00M HCl and 24.0 mL of 8.00M HNO3. Water is then added until the final volume is 1.00L. Calculate [H+],[OH] and the pH for this solution.
The combustion of one mole of propane, C3H8, releases 531 kcal. How much heat is released by the combustion of 1.20 moles of propane?
the only difference between succinate and fumarate is the geometry around their double bonds, one contains a cis double bond,
calculate the heat of hydrogenation of naphthalene. Does this value provide any evidence for aromatic character in naphthalene?
what precipitate would form if calcium chloride, 5% dextrose, 0.9% sodium chloride, and potassium phosphate
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