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Rank the bonds of CaBr2, CH4, and Na3N, in order of decreasing ionic character. Where do we always find compounds containing metals, in this ranking order?
a 1.00 l buffer solution is 0.250 m in hf and 0.250 m in naf. calculate the ph of the solution after the addition of
Which of the following terms define(s) an acid according to the Bronsted-Lowry theory?
organic reactions can be classified as substitutions eliminations or additions and the reagents can be classified as
the concentration of Hcl in a solution by titrations using different indicators to find the end point. Is the difference between indicators 1 and 2 significant at the 95% confidence level?
A 24.60 mL sample of 0.185 M HNO3 requires 27.35 mL of a KOH solution for complete neutralization in an acid-base titration. What is the molarity of KOH
What is the total number of atoms in one unit (molecule or formula unit) of K2CrO4? What is the total number of atoms in a mole of K2CrO4
Give a stepwise mechanism showing the base-induced formation of diphenylacetylene from meso-stilbene dibromide. Use curved arrows to symbolize the flow of electrons.
In the laboratory we may prepare a sodium hydroxide solution by dissolving 2.0 grams of sodium hydroxide into enough DI water to give a total volume of 500ml. What are the [OH-], the [H3O+] and the pH of the resulting solution?
a 145 g aluminum cylinder is removed from a liquid nitrogen bath where it has been cooled to -196deg c. the cylinder is
What are the similarities and differences between a classical harmonic oscillator and a quantum harmonic oscillator?
its molar mass is 71.61 g/mol, how many grams of this compound must you burn to release 866.80 kJ of heat?
You have 135.8 mL of a 2.50, solution of Na2Cr04 (aq). You also have 125 mL of a 2.50 M solution of AgNO3. Calculate the concentration of Na+ after the two solutions are mixed together.
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