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A 10.5 g sample of FeCl3 is dissolved in 1.50 x 10^2 g of water, with...
A 1.00g sample of an unknown halide of Cu, CuX2 (X is a halide ion), is dissolved in a 25.0 g of water. The freezing point of the solution is found to be -1.00 C. Assuming 100% dissociation of the halide, what is the identity of halogen X? Use a Kf for water of 1.86 C/m.
A 12.5855 g sample of an unknown compound (X) is dissolved in 32.0000 g of water. The resulting solution has a freezing point of – 4.3oC. What is the molar mass of X? Kf = 1.858 oC/m.
Question 2 (10 points) Calculate the freezing point of a solution that contains 5.78 g of glucose, a non- electrolyte, dissolved in 130 g of water. Note: Kf for water is 1.86°C/m
When 151. g of benzamide C7H7NO are dissolved in 1200. g of a certain mystery liquid X, the freezing point of the solution is 8.0 °C lower than the freezing point of pure X. On the other hand, when 151. g of iron(III) chloride are dissolved in the same mass of X, the freezing point of the solution is 20.5°C lower than the freezing point of pure X. Calculate the van't Hoff factor for iron(III) chloride in X. Be sure...
The normal freezing point of water, H2O is 0.00 °C and its Kfn value is 1.86 °C/m. Assuming complete dissociation of the electrolyte, if 12.39 grams of sodium nitrate (NaNO3, 85.00 g/mol) are dissolved in 245.8 grams of water what is the freezing point of the solution? The normal boiling point of water, H20 is 100.00 °C and its Kbp value is 0.512 °C/m. Assuming complete dissociation of the electrolyte, if 13.39 grams of potassium chloride (KCI, 74.55 g/mol) are...
When 97.9 g of alanine C3H7NO2 are dissolved in 850. g of a certain mystery liquid X, the freezing point of the solution is 2.00°C less than the freezing point of pure X. Calculate the mass of iron(III) chloride that must be dissolved in the same mass of X to produce the same depression in freezing point. The van't Hoff factor =i3.64 for iron(III) chloride in X. Be sure your answer has a unit symbol, if necessary, and round your...
Question 1. A 2.700×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3 mL . The density of water at 20.0∘C is 0.9982 g/mL. a.)Calculate the molality of the salt solution. B.) Calculate the mole fraction of salt in this solution. C.) Calculate the concentration of...
V GOSTEGU When 32.3 g of alanine (C,H,NO,) are dissolved in 700.g of a certain mystery liquid X, the freezing point of the solution is 2.90 "Cless than the freezing point of pure X Calculate the mass of Iron(III) chloride that must be dissolved in the same mass of X to produce the same depression in freezing point. The van't Hoff factor i-3.68 for iron(III) chloride in X. Be sure your answer has a unit symbol, if necessary, and round...
A 15.3 g sample of a compound known to contain 3 ion species is dissolved in 110 g of water. The boiling point of the solution is 103.0 degrees Celsius. What is the molar mass of the compound? Additional Info: Physical Properties of water Freezing point: 0.00 degrees Celsius Boiling point: 100 degrees Celsius Kf: 1.86 Degrees Celsius/m Kb: 0.512 degrees Celsius/m
An aqueous salt solution is formed by adding 61.65 g Iron (III) nitrate (solute) to water (solvent). What mass (in g) of water is used if the freezing point of the solution is -11.8 oC. Kf H2O = 1.86 oC/m