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What [hkl] direction connects the adjacent face-centered positions 1/2, 1/2, 0 and 1/2, 0, 1/2? Illustrate answer with a sketch.
Estimate the enthalpy change for the combustion of one mole of ethanol (C2H5OH) using average bond dissociation enthalpies (in KJ/mol) for C-H: 413, O-?H: 463, C-O: 358, C-C: 154, C=O: 122, and O=O: 498.
Helium is compressed isothermally and reversibly at 100 celcius from a pressure of 2 to 10 bar
A benzylic carbocation is generated under the conditions of part A. would the presence of a para CH3O- group on the benzene ring
An equilibrium mixture of SO2, SO3 and O2 gases is maintained in a 11.5 L flask at a temperature at which Kc = 55.2 for the reaction shown below.
For the reaction 2IBr (g) goes to I2 (g) + Br2 (g), Kc=280 at 150.0 degree celcius. Suppose that 0.900 mol IBr in a 2.00-L flask is allowed to reach equilibrium at 150.0 degree celcius, what are the equilibrium concetrations of I2, Br2, and IBr
What is the pH of a solution that is 0.20 M HC2H3O2 and 0.40 M NaC2H3O2? Ka for acetic acid 1.8 x 10-5. Explain
Calculate the solubility of each of the following compounds in moles per liter. Ignore any acid-base properties. (c) PbI2, Ksp = 1.4x10^-8
A 1.245 gram sample of a compound containing barium and oxygen was dissolved in hydrochloric acid to give a solution of barium ion, which was then completely precipitated out with an excess potassium chromate to give 2.012 grams of barium chromate..
Phosphorus donor atoms with a concentration of 10^16 cm^-3 are added to a pure sample of silicon. assume that the phosphorus atoms are distributed homogeneously throughout the silicon.
If cost per gram were not a concern, which of the following substances would be the most efficient per unit mass for melting snow from sidewalks and roads. Explain.
If the partial pressure of H2S is 0.539 atm, calculate the total pressure (atm) of the mixture visualized. I wasn't able to put the actual visualization but I will provide to the best of my ability what was given
concentration was dissolved in HCl and diluted to 100.0 mL. Aliquots of 10.00 mL of this unknown solution were added to different volumes of a 2.08 ÃŽ¼g/mL Ca standard solution and diluted to 200.0 mL. Find the weight percent of Ca in the rock sam..
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