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A buffer may be prepared by mixing a weak acid with a roughly equivalent amount of strong base. Which of the acids below is best for the preparation of a buffer with a pH of 4.00?
Alcohols generally require acid catalyst in order to undergo substitution by nucleophiles. The acid catalyst enhances the reaction by
A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result of its absorption (or lack thereof) by an n=1 electron.
What mass of precipitate forms when 124.5 mL of 0.660 M NaOH is added to 517 mL of a solution that contains 10.9 g aluminum sulfate per liter?
Differences in boiling points, Rationalize the difference in boiling point between the members of the following pairs of substances:
Lithium iodide has a lattice energy of -7.3 times 10^2kJmol and a heat of hydration of -793kj/mol. Find the heat of solution for lithium iodide.
how much current is produced by the dissolution of .525 g of chromium per hour to produce chromium (III)?
What compound could be added to a 0.10 M KC2H3O2 solution to make it an effective buffer. Also, write a balanced chemical reaction for the addition
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 26.50 mL of 0.0502 M NaOH but overshoot the end point, and the solution turns deep pink.
What is the mass of silver bromide AgBr precipatated from 2.96 g of iron (III) bromide FeBr3 ? FeBr3 + AgNO3 = AgBr + Fe(NO3)3.
Selective precipitation, fractional precipitation, amphoteric precipitate solubilization, competitive equilibrium solubilization: anion protonation, competitive equilibrium solubilization
If 1.50 g of X reacts with 3.54 g of M to produce 4.22 g of a compound with the formula M4X3, and the atomic mass of M is 48.5 amu.
What are the main mononitro products of the nitration of the following compounds - Write structural formulas for the compounds
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