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If 500 ml of 0.20 M NaCN is treated with 500 mL of an HOCl solution to produce a resultant solution with pH 7.00, calculate Mi for this HOCl solution. Show all pertinent work including reaction equations but not arithmetic.
Identify the property of gas that is measured in each of the following: a) 425 K; b) 1.0 atm; c) 10.0 L; d) 0.50 mol of He.
A sample of molten iron occupies a volume of 7.11 x 10-3 L. If the density of iron is 7.86 g/cm3, what is the mass of iron in grams in the sample?
Chromium crystallizes in a body-centered cubic lattice (the Cr atoms are at the lattice points only). If the density of the metal is 7.19 g/cm3, what is the unit cell edge length in pm?
Please classify each of the following substances as a strong acid, weak acid, strong base, weak base or neutral.
Ruthenium can form complexes with chloride and water ligands with varying stoichiometers. Three such complexes are: [RuCl2(H2O)4]+ [RuCl3(H2O)3] [RuCl4(H2O)2] a.) What is the oxidation state of ruthenium in each of these complexes
A flask is charged with 0.140 mol of A and allowed to react to form B according to the following hypothetical gas-phase reaction. A(g) B(g) The following data are collected. times (s) 0 40 80 120 160 moles of A 0.140 0.068 0.049 0.031 0.019 (a)
Write a balanced half-reaction for the oxidation of chromium ion (Cr^3+) to dichromate ion (Cr2O7^2) in acidic aqueous solution. Be sure to add physical state symbols where appropriate
Draw molecular structures for the compounds listed below. If there is any ambiguity about the stereochemistry for the compound, be sure to draw all possible isomers.
a container has a mass of 78.91 grams when empty and 92.44 g when filled with water. the density of water is 1.000
Explain why it is necessary to remove the Erlenmyer flask from the hot water bath at the moment the volatil liquid disappears
A gas mixture is composed of 0.0856 mol of Ne and 0.0254 mol Kr. What is the mass percent of Kr in this mixture?
A flask contains 200 mL of 0.1M phosphate buffer that has a pH of 7.0. What volume of 0.1M NaOH should be added to increase the pH to 7.6
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