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An xray photon of wavelength 0.989 nm strikes a surface. The emitted electron has a kinetic energy of 969eV. What is the binding energy of the electron in kJ/mol?
Determine the following characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH
A solution is made by dissolving 0.732 mol of nonelectrolyte solute in 837 g of benzene. Calculate the freezing point and boiling point of the solution.
the volumes for both reactants were mistakenly and unknowingly reduced by 5 in all of the beers law plot solutions.
describe an incident fire spill explosion etc you have experienced or research one on the internet professional journal
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K. C(s) + O2(g) ----> 2CO(g)
The analysis of oil from a reciprocation aircraft engine showed a copper content of 8.53 μg Cu/mL. Calculate the 90% and 99% confidence intervals of the results if it was based on (a) a single analysis, (b) the mean of four analyses, (c) the mean ..
NaOH required for titration of 10 mL of monoprotic acid solution. What was the original concentration of acid? What was the original pH of acid solution if its pKa is 5.3?
What reaction pathway is followed when the compound shown is heated with a concentrated solution of sodium ethoxide (NaOCH2CH3) in ethanol?
How do you calculate the effective nuclear charge of an electron using slater's rules for Krypton
A small immersion heater is used to heat 475 mL of water from 75 degrees Fahrenheit to 195 degrees fahrenheit in 5.00 minutes.
what is the density of a sample of ammonia if the pressue is 705 mm Hg and the temperature is 63.0
What is the hydroxide-ion concentration of a 0.190 M oxalic acid, H2C2O4, solution? For oxalic acid, Ka1 = 5.6x10-2 and Ka2 = 5.1x10-5.
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