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The first ionization energy of lead (Pb) is 716 kJ/mol. If a Pb atom is ionized using a photon of ultraviolet radiation having an energy of 1.987E-18 J, what is the amount of leftover energy that goes into the kinetic energy of the ejected electron?
an unknown salt is either naf nacl or naocl.when 0.050 mol of the salt is dissolved in water for form 0.500 l of
how do you calculate the molar enthalpy of barium nitrate in this situationbarium nitrate potassium sulfate -gt barium
calculate deltaH in kilojoules for the reaction, assuming that the heat capacity of the calorimeter is 776 j/celsius, that the specific heat of the final solution is the same as that of water(4.184J/G*C), and that the density of the solution is 1...
concentrated sodium hydroxide is used as a laboratory reagent. the percent by mass of sodium hydroxide is 69.0. what is
the pka of benzoic acid is 4.2 show mathematically that this acid is 50% ionized at ph 4.2? Part B is Use this result to explain why precipitation of benzoic acid is incomplete if the pH of an aqueos solution of benzoate ion is lowered to Ph 7 by ..
Draw the Lewis structure of formic acid, HCO2H. (Hint: C is the central atom. One of the H is bonded to an O.) How do we know which of the possible structures for HCO2H is more likely to be correct?
How many different aldols (b-hydroxyaldehydes), including constitutional isomers and stereoisomers,
Write an Oxidation equation for the left half cell and a reduction equation for the right half cell. Write a balanced equation for the net cell reaction.
1.list all the strong aqueous acids. what is the difference between a strong acid and a weak acid? how do the
Describe the process of obrital hybridization as applied to carbon. You must include information on obritals used and produced
The molar heat of vaporization of ethanol is 39.9 kJ/mol and the boiling point of ethanol is 78.3°C. Calculate ?S for the vaporization of 0.50 mol ethanol.
Since the freezing point of a solution depends on the number of particles, what would you expect the freezing point of 0.1 m solutions of aqueous NaCL and BaCl2?
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