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reaction A has positve delta H and positve delta S, reaction B has positive delta H and negative delta S, reaction C has negative delta H and positiveS, reaction D has has negative delta H and negative delta S. Which reaction(s) exhibit crossover tempeatures, i.e. temperature-dependendt spontaneity
The partial pressure of the H2 is 1.9 atm, and the partial pressure of the Ne is 3.4 atm. What is the mole fraction of H2?
degree C and 600. torr contains 50% helium and 50% xenon by mass. what are the partical pressures of individual gases?
An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon.
How many grams of magnesium chloride must be dissolved in 568 g of water to give a solution that freezes at -2.38°C
Calculates the molarity of a calcium carbonate standard solution that contains 0.2430 grams of calcium carbonate dissolved in a total of 250.0 mL
Calculate the pH after 0.020 mol NaOH is added to 1.00 L of a solution which is 0.100 M NH2OH and 0.100 M HONH3Cl.
Draw the Lewis structure and structural formulas for CCl3F. Sketch the spacefiling model and the charge-density model for this molecule.
How many molecules of carbon dioxide are produced when 121 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
What simple compund reacts with carboxylic acid to make lidocaine? Identify and draw the structures of two simpler compounds one from which should be a carboxylic acid, from which you could make lidocaine.
For a reaction in which delta H= -360.1 kJ/mol and delta= - 90.0 J/K*mol, determine the temperature (in *C) below which the reaction is spontaneous.
What is the pH of a buffer that results when 0.50 mole of Na3PO4 is mixed with 0.75 mole of HCl and diluted with water to 1.00 L? The acid dissociation constants for phosphoric acid
The molecular shape of [TeF3 ]-1 is: A. tetrahedral B. square planar C. square pyramidal D. trigonal bipyramidal E.octahedral F. T-shaped G. see-saw, butterfly, or unsymmetrical tetrahedron
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