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Potassium nitrate has a lattice energy of -163.8 kcal/mol and a heat of hydration of -155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 103kJ of heat?
Calculate the standard free-energy change for the following reaction at 25 degrees C. 2Au^3+(aq) + 3 Cr(s) 2Au(s) + 3Cr^2+(aq) delta G^degree= ? KJ/mol
If p-nitroacetanilide is hydrolysed in acidic solution, why does hydrolysis not take place during the nitration with HNO3 and H2SO4.
Methanol (CH3OH) can be made by controlled oxidation of methane. CH4(g) 1/2 O2(g) ? CH3OH(g) (a) Calculate ?H° and ?S° for this reaction. (b) Calculate ?G° at 298 K. (c) Calculate the temperature at equilibrium.
The IR spectrum of benzoic acid is included on page 3. Assign three specific absorbance bands (from the peak list below the spectrum) to the corresponding bond vibrations
Florine is so reactive that it forms compound with material insert to other treatment when 0.448gm of plantinum is heated in florine, 0.71gm of dark red, volatile solid forms. What is emperical formula
What is the geometric structure of acetone (CH3)2CO. Indicate the bond angles and specify if they are non-ideal. Help?
What is the molarity of a solution made by dissolving 34.2 g of sodium chloride in 575 mL of solution
the mechanism involved in the distillation of a mixture containing acetone and ethanol
A 200 ml sample of 0.200 M HBr solution is titrated with 0.2 M NaOH. Calculate the pH of the solution after 19.9 ml of NaOH have been added.
Determine the volume(mililiters) required to prepare 200.0ml of a 0.250M KNO3 solution from a 6.00M KNO3
What was the wavelength of the second photon emitted?
A solution of sodium chloride in water hasa vapor pressure of 20.9 Torr at 25 degrees celsius. What is the mole fraction of NaCl in this solution
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