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A solution of 5.00g of an organic compound in 25.00g carbon tetrachloride boils at 84.8 Celsius. What is the molecular weight of the compound? (bpt ccl4 = 76.5 C, Kb = 5.03 C/m)
Calculate the mole fraction of water in this solution, assuming that the KI is completely dissociated. b) Predict the vapor pressure of water over this solution at 25 °C, assuming complete dissociation of the KI.
A solution of methanol, CH3OH, cotains 55.0 grams of methanol in 100. mL of water solution. What is the molarity of methanol in the solution?
Water is composed of 11.2% hydrogen and 88.8% oxygen. What mass of water contains 16.0g of hydrogen?
What % of the bromide ions remain in solution, i.e., unprecipitated, just before silver chloride begins to precipitate? Ksp for AgCl=1.8x10^-10, Ksp for AgBr=3.3x10^-13
what is the mechanism of how sodium hydroxide reacts with ester (lard) to form cardoxylic acid soap
A 350 mL air sample collected at 35 degrees C has a pressure of 550. mmHg. What pressure will the air exert if it is allowed to expand to 425 mL at 57 degrees C?
Multiple choice questions in Radioactive Decay - electron emitted from the nucleus during some kinds of radioactive decay is known
What is the molarity of a solution prepared by dissolving 10.5 grams of NaF in enough water to produce 750 mL of solution
one heating 5.03 g of hydrate barium chloride, 4.23 g is left behind. what is the name of this hydrate?
What is the molality of CrCl3 in a solution prepared by dissolving 75.2 g chromium(III) chloride hexahydrate in 250.0 g of water.
Write a balanced chemical equation for the reaction of chlorine with thiosulfate ion, assuming an acidic solution.
A student wated 20.000 g of salt. Which balance should the student use in order to obtain the most accurate quantity? A.) a Platform Triple Beam Balance
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