A solution is obtained by dissolving a 2.000 g sample of an unknown solid in 875.0...
A solution is obtained by dissolving a 2.000 g sample of an unknown solid in 875.0 g of benzene was observed to begin freezing out benzene at 3.75C. Estimate the molecular weight of the unknown taking 5.51C as the melting point of pure benzene with the latent heath of fusion of benzene equal to 9899 J/mol
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A solution is obtained by dissolving a 2.000 g sample of an
unknown solid in 875.0...
a solution was made by taking 33.88 g of an uknown ionic solid(i=3) and dissolving it...
a solution was made by taking 33.88 g of an uknown ionic solid(i=3) and dissolving it in 175.0 g of water. the measured freezing point of solution was -2.65 C. calculate the molecular weight of the unknown substance.
A solution is prepared by dissolving 0.107 g of an unknown non-electrolyte in 88.1 g of...
A solution is prepared by dissolving 0.107 g of an unknown non-electrolyte in 88.1 g of camphor. The freezing point of the solution was measured to be 178.0�C. What is the molecular weight of the compound? (The freezing point of pure camphor is 179.5�C and kf= 40�C/m)?
2. A solution of an unknown molecular substance is prepared by dissolving 0.50 g of the...
2. A solution of an unknown molecular substance is prepared by dissolving 0.50 g of the unknown in 8.0 g of benzene. The solution freezes at 3.9°C. Determine the molar mass of the unknown. (Benzene has a freezing point of 5.5°C and a Kfvalue of 5.12°C/m) 10
A solution made by dissolving 150.0 g of an unknown compound in 425.0 mL of benzene...
A solution made by dissolving 150.0 g of an unknown compound in 425.0 mL of benzene to make a solution which has a freezing point 18.6 °C lower than that of pure benzene. Kf for benzene is 5.12 °C/m and the density of benzene is 0.877 g/mL. b) The molality of the solution is 3.63. How many moles of the unknown compound were dissolved in the solution? C) what is the molar mass of the unknown compound?
The freezing point of a solution that contains 1.00 g of an unknown compound, (A), dissolved...
The freezing point of a solution that contains 1.00 g of an unknown compound, (A), dissolved in 10.0 g of benzene is found to be 2.17 oC. The freezing point of pure benzene is 5.48 oC. The molal freezing point depression constant of benzene is 5.12 oC/molal. What is the molecular weight of the unknown compound?
The freezing point of a solution of 1.104 g of an unknown nonelectrolyte dissolved in 36.81...
The freezing point of a solution of 1.104 g of an unknown nonelectrolyte dissolved in 36.81 g of benzene is 1.08°C. Pure benzene freezes at 5.48°C and its Kf value is 5.12°C/m. What is the molecular weight of the compound?
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...
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water...
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weight of the unknown solute (R - 0.0821 L'atm/K mol)?
A solution is prepared by dissolving 11.10 g of an unknown non-electrolyte solute in 78.64 g...
A solution is prepared by dissolving 11.10 g of an unknown non-electrolyte solute in 78.64 g of cyclohexane. The freezing point of the solution is found to be 2.06 oC. What is the molar mass of the unknown solute in g/mol? Please report your answer with 3 significant figures. Answer g/mol
A solution is prepared by dissolving 3.04 g of an unknown nonelectrolyte in 16.00 g of...
A solution is prepared by dissolving 3.04 g of an unknown nonelectrolyte in 16.00 g of cylcohexane (tf = 6.6 oC and kf = 20.0 oC/m). What is the molar mass of the unknown compound if the solution has a freezing point of -6.7 oC? Please see https://youtu.be/lwWZ5hdB61M for assistance. Mm = g/mol
2. A solution of an unknown molecular substance is prepared by dissolving 0.50 g of the unknown in 8.0 g of benzene. The solution freezes at 3.9°C. Determine the molar mass of the unknown. (Benzene has a freezing point of 5.5°C and a Kfvalue of 5.12°C/m) 10
22. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0°C. What is the molecular weight of the unknown solute (R - 0.0821 L'atm/K mol)?
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