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Potassium nitrate has lattice energy of -163.8 kcal/mol as well as a heat of hydration of -155.5 kcal/mol. Explain how much potassium nitrate has to dissolve in water to absorb 114kJ of heat?
For IF5 draw an appropriate Lewis structure.
A galvanic cell is formed by connecting an iron (III)/ iron metal electrode to a zinc (II)/ zinc metal electrode through a suitable salt bridge.
Determine the heats of formation or the steric energies of the exo-and endo-anhydride adducts using a molecular mechanics program. What do these energies tell you about the mechanism of the reaction
A 5.00 L flask at 279 K contains a mixture of He and O2 with a total pressure of 1.00 atm. If the mole fraction of O2 is 0.40, what is the mass fraction of O2?
What is the maximum amount of work that can be obtained by the combustion of this butane if the gas is first brought to a pressure of 1.00 atm and the temperature is brought to 25 oC? Assume the products are also returned to the same temperature a..
a styrofoam cup holding 116 g of hot water at 1.00 102degc cools to room temperature 16.1degc. what is the change in
Calculate the vapor pressure of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6, at 20°C. Assume the solution is ideal. The vapor pressure of pure benzene is 74.6 torr at 2..
In the neutralization reaction: HCl (aq) + NaOH (aq) = NaCl (aq) +H20, 25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is ?
When an ionic solid is added into a solvent, you can see that the ionic solid dissociates into its respective cations and anions. The solvent molecules immediately cluster around the ions.
determine the enthalpynbsp for the given reaction as cs2 l 2 o2 g rarr co2 g 2 so2 g if given cs o2g rarr co2g
A sample consisting of 1-bromopropane and 1-chloropropane isinjected into a gas chromatograph quipped with a nonpolar column.which compound has the shorter retention time? Explaine the answer.
what Kelvin temperature will the vapor pressure be 3.00 times higher than it was at 329 K?
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