What is the freezing point in the given solutions
What is the freezing point in (C) the solutions below? For water, Kf=1.86 (Ckg)/mol. The vapor pressure of water at 45.0 C is 71.93mm Hg.
1. A solution of 12.5 g of urea, CH4N2O, in 135 g of water at 45 C.
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What is the difference between biochemical, pharmaceutical, and diagnostic chemical reactions in healthcare?
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O (l) is 75.2 J/mol*K, and that the heat capacity of H2O (s) is 37.7 J/mol*K, calculate the heat of fusion of water (in kJ) at -14 C.
Consider a 13.0% solution of sulfuric acid, H2SO4, whose density is 1.090 g/mL. Calculate the molarity of the solution.
The vapor pressure of water at 25 o C is 23.8 mm Hg. a. Write the balanced chemical equation. b. Calculate the mass (in grams) of zinc metal that was consumed in the reaction.
How many moles of chloride were present in the unknown. d. What mass of cholride was present in the unknown? e. What was the mass percentage of cholride present int the original sample
Which process will likely increase the solubility of solid KCl in water? Stirring the mixture. Increasing the surface area of KCL * Raising the temperature of the mixture *lowering the temperature of the mixture
What is the molar concentration of chloride ion in the final solution? (assuming complete dissociation) 2) What is the percentage yield if 122.5 mg of a light blue-green solid is collected after 100.00 mL of this solution is combined with 25.0 mL
A 2750 ml sample of 3 M HCl solution is treated with 4.66gm of magnesium. Calculate the concentration of the acid solution after all the metal has reacted. Assume that the volume remain unchanged.
Dihydrogen pthalate (H2C8H4O4) is a diprotic acid. An analyte sample contains 0.127 M KHP and 0.0678 M (H2C8H4O4). What volume of a 0.205 M NaOH solution is required to neutralize 25.0 mL of the analyte solution.
If 15 g of sugar are dissolved in 200 g of water, which of the following terms describes the sugar? A. solvent B. solute C. suspension D. colloid
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