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Compute the vapor pressure at the temperature of 25 degree Celsius of H2O above a solution formed by mixing 100. Grams of sucrose, C12H22O11, (FW = 342.3) in 250. Grams of H2O. The vapor pressure of pure water = 23.8 mm Hg at 25 degree Celsius. Express your answer in mm Hg?
At what temperature would a 1.80 m NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? Kf for water is 1.86 degrees C/m. answer in degrees C
in the electrolysis of aqueous solution of Na2SO4, what reactions occur at the anode and the cathode. explain
why is anhydrous sodium sulfate added to the organic solution remaining after the extractions with 6 M HCL and 6 M NaOH
Using Lewis electron-dot symbols to depict the monatomic ions formed from each of the following reactants, predict the formula of the compound the ions produce.
In photosynthesis, plants use energy from the sun in combination with carbon dioxide and water to form glucose (C6H12O6) and oxygen. If 4.50 moles of water react with carbon dioxide, what mass of glucose is produced?
Explain how the carbonate system in natural waters provides buffering capacity
to prepare a 13.9 kg dog (assume volume of 13.9 L) for surgery, 0.0343 moles of an anesthetic was administered intravenously. The reaction in which the anesthetic is metabolized displayed a first half life of 132.5 minutes and a second half life o..
In a healthy wild type animal the Km (KT) of the glucose transporter (GLUT2) present in liver cells is 15 mM. What would happen to glucose transport in the liver cells of animal that expressed only a mutant GLUT2 protein with a Km of 1mM
The rule works particularly well for weakly interacting molecules, such as those of a noble gas, but not so well for water among other substances. Assuming the rule is exact, estimate the molar enthalpy of evaporation for Argon (in kJ/mol), whose ..
Magnesium sulfate, MgSO4, is added to 461 mL of 0.030 M sodium hydroxide, NaOH, until a precipitate just forms. How many grams of magnesium sulfate were added?
The compound Mg(OH)2 is basic, but Si(OH)4 is an acid (silicic acid). Why? Select all that apply. 1. The OH groups attached to the silicon atom in Si(OH)4 strengthen the OH bond so that a hydrogen ion dissociates when the compound is dissolved in ..
The most common source of copper is the mineral chalcopyrite. How many kilograms of chalcopyrite must be mined to obtain 320. of pure copper?
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