If the molar mass of toluene 92.6 g/mol, how much of toluene is needed to depress...
If the molar mass of toluene 92.6 g/mol, how much of toluene is needed to depress the freezing point of 200 g of benzene by 0.47 degrees Celsius? Kf= 5.12 C/m
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If the molar mass of toluene 92.6 g/mol, how much of toluene is
needed to depress...
14. If the molar mass of toluene is 92.6 g/mol, how much toluene is needed to...
14. If the molar mass of toluene is 92.6 g/mol, how much toluene is needed to depress the freezing point of 200 g of benzene by 0.47°C? K+ = 5.12°C/m ? A. 1.79 B. 17 g C. 0.0.91 g D. 18.35 g E. Not enough information given to answer
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the fr...
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the freezing point of 200 g of benzene by 047C? K 5.12 Cm a The vapor pressure of pure water at 26 "C is 25.2 torr. What is he vapor pressure of a solution that contains 16.0 g of glucose (CaHuO) dissolved in 80 g of water? A. 1.7g A. 14.1 tor B. 17g B. 24.7 torm C....
14. If the molar mass of toluene is 925 gmol, how much toluene is needed to...
14. If the molar mass of toluene is 925 gmol, how much toluene is needed to depress the freezing point of 200 g of benzene by 0.47°C? K 5 .12"C/m A 1.79 B. 179 C.0.0.919 D. 18.359 E. Not enough information given to answer 15. For crystal lattice where dimension, a b=cand also all angles a Bay = 90° represents: B. cubic A tetragonal tetragonal D. orthorhombic E both A and C 16. Consider the compounds water (HO). dimethylether (CH,OCH),...
What is the molar mass of a nonpolar molecular compound if 6.34 g dissolved in 53.4...
What is the molar mass of a nonpolar molecular compound if 6.34 g dissolved in 53.4 g benzene begins to freeze at 2.81 °C? The freezing point of pure benzene is 5.50 °C and the freezing point depression constant, Kf, is -5.12 °C/m. A. 2.26 x 10-4 g/mol B. 0.226 g/mol C. 12.1 g/mol D. 226 g/mol
A 2.50 g sample of naphthalene, C10H8, was dissolved in 100 g of benzene. What is...
A 2.50 g sample of naphthalene, C10H8, was dissolved in 100 g of benzene. What is the freezing point of the solution? The freezing point of pure benzene is 5.45 degrees Celsius; Kf=5.07 degrees Celsius/m. The molar mass of C10H8 is 128.17 g/mol The answer is supposed to be 4.46 degrees Celsius. How did they get there?
The molar mass of unknown molecular compound is determined using freezing point depression. The substance is...
The molar mass of unknown molecular compound is determined using freezing point depression. The substance is dissolved in benzene (C6H), an organic solvent. Use the data below to determine the molar mass of the substance. 8.65 g Mass of unknown compound Freezing point of solution Volume of benzene -10.21°C 35.0 mL 5.53°C Freezing point of benzene Density of benzene Kf for benzene 0.8765 g/mL 5.12°C/m Molar mass = g/mol
Pure benzene, C6H6, has a molar mass of 78.114 g mol-1, a density of 0.8765 g...
Pure benzene, C6H6, has a molar mass of 78.114 g mol-1, a density of 0.8765 g mL-1, a freezing point of 5.45°C, and a boiling point of 80.2°C. Its freezing point depression and boiling point elevation constants are: Kf = 5.07°C m-1; Kb = 2.53oC m-1. A solution was made by taking 33.88 g of an unknown nonelectrolyte and dissolving it in 175.0 g of benzene. The measured freezing point of the solution was 1.65oC. Calculate the molar mass of...
The freezing point of benzene is 5.5 °C. What is the molar mass of a nonionizing...
The freezing point of benzene is 5.5 °C. What is the molar mass of a nonionizing solute if 1.06 grams of the solute added to 24.83 g of benzene lowers the freezing point to 3.97. The Kf of benzene is -5.12 °C/m. Record your answer as a whole number.
Calculate the freezing point of a solution of 40.0 g of calcium chloride (molar mass =...
Calculate the freezing point of a solution of 40.0 g of calcium chloride (molar mass = 110.98 g/mol), dissolved in 800. g of benzene, C6H6. Kf for benzene is 5.10oC/m and the freezing point is 5.50oC for benzene.
1.The freezing point of benzene is 5.5 °C. What is the molar mass of a nonionizing...
1.The freezing point of benzene is 5.5 °C. What is the molar mass of a nonionizing solute if 1.99 grams of the solute added to 20.62 g of benzene lowers the freezing point to 3.44. The Kf of benzene is -5.12 °C/m. Record your answer as a whole number. 2.Water has a Kf of -1.86 °C/m. Calculate the new freezing point of an aqueous solution made by mixing 38.66 g water and 1.64 g MgCl2. 3.Ethanol has a Kb of...
14. If the molar mass of toluene is 92.6 g/mol, how much toluene is needed to depress the freezing point of 200 g of benzene by 0.47°C? K+ = 5.12°C/m ? A. 1.79 B. 17 g C. 0.0.91 g D. 18.35 g E. Not enough information given to answer
Е. попе E. 0.733 and 1.324 14. the molar mass of toluene is 92.6 gmol, how much tokuene is needed to depress the freezing point of 200 g of benzene by 047C? K 5.12 Cm a The vapor pressure of pure water at 26 "C is 25.2 torr. What is he vapor pressure of a solution that contains 16.0 g of glucose (CaHuO) dissolved in 80 g of water? A. 1.7g A. 14.1 tor B. 17g B. 24.7 torm C....
14. If the molar mass of toluene is 925 gmol, how much toluene is needed to depress the freezing point of 200 g of benzene by 0.47°C? K 5 .12"C/m A 1.79 B. 179 C.0.0.919 D. 18.359 E. Not enough information given to answer 15. For crystal lattice where dimension, a b=cand also all angles a Bay = 90° represents: B. cubic A tetragonal tetragonal D. orthorhombic E both A and C 16. Consider the compounds water (HO). dimethylether (CH,OCH),...
The molar mass of unknown molecular compound is determined using freezing point depression. The substance is dissolved in benzene (C6H), an organic solvent. Use the data below to determine the molar mass of the substance. 8.65 g Mass of unknown compound Freezing point of solution Volume of benzene -10.21°C 35.0 mL 5.53°C Freezing point of benzene Density of benzene Kf for benzene 0.8765 g/mL 5.12°C/m Molar mass = g/mol
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