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(a) Give two instances each from metals and nonmetals to support these generalizations.
(b) Explain what connection is there between this contrasting behavior of metal and nonmetal oxides and ionization energies?
the mass of an electron is 9.11times 10-31rm kg. if the de broglie wavelength for an electron in a hydrogen atom is
considering the following two nuclear processes which produce isotopes useful for medical
Assuming the reduced mass associated with the stretch equals the mass of the hydrogen atom, preduct the frequency of the C-D stretch of CDCl3
a 447 cm3 volume of na2co3 solution was warmed with an excess of sulfuric acid until all action ceased. a 5.0 l volume
explain the major departure of the marginalist school from the classical political economists. how did it change the
in an experiment a student gently heated a hydrated copper compound to remove the water of hydration. the following
What is the percent by mass of oxygen in a gaseous mixture whose molar composition is 0.500% CO2 and 99.500% air. The composition of air is 21% mole O2, 79% mole N2, and has an average molar mass of 29.0 g/mol.
Estimate change in free energy for this reaction at each of the following temperatures and predict whether or not the reaction will be spontaneous
A 30.0 mL sample of 0.30M HClO (aq) is titrated with 0.20 M NaOH (aq). Ka of HClO is 3.5*10^-8. What is the pH of the solution when 5.0 ml more of NaOH is added in the titration.
How can you estimate the pH range of an indicator's color change? why do some indicators have two separate pH ranges?
A weak monoprotic acid is titrated with NaOH and the following data is recorded. Calculate the molar mass of the weak acid.
Write the balanced total ionic equation and the net ionic equation (including phase labels) for the reaction between HCl(aq) and NaOH(aq).
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