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18 Nov 2019
Please don do questions and 26 but do all the othere
Solid iodine has a vapor pressure of 1.0 Hg at 39 degree C. How many moles of iodine will sublime into a 500 mL flank at this temperature? The vapor pressure of ethanol is 400 mmHg at 63.5 degree C. Its molar heat of vaporization is 39.3 kJ/nol. What is the vapor pressure of ethanol, in mmHg, at 34.9 degree C? Iridium has a radius of 136 pa and crystallizes in a face-centered cubic unit cell. What is the edge length of the unit cell? An element forms a body-centered cubic crystalline substance. The edge length of the unit cell is 287 pm and the density of the crystal is 7.92 g/cm^3. Calculate the atomic weight of the substance. (Avogadro's # = 6.022 times 10^23) Sodium hydroxide is available commercially as a 40.0 by weight aqueous solution. Calculate the molality of this sodium hydroxide solution. At 80_oC, pure liquid A has a vapor pressure of 700 mmHg and pure liquid B has a vapor pressure of 940 mm Hg. What is X_A for a solution of A and B with a normal boiling point of 80_oC? Calculate the freezing point of a solution of 20.0 methyl salicylate, C_7H_6O_2, dissolved in 800. g of benzene, C_6H_6. kf is 5.10_oC/m and the freezing point is 5.50_oC for benzene. What is the molar mass of sucrose (table sugar) if a solution prepared by dissolving 0.822 g of sucrose in 300.0 mL of water has an osmotic pressure (II) of 149 mm Hg at 298K? (II = MRT(R, gas constant = 0.08206 L.atm/K.mol)
Please don do questions and 26 but do all the othere
Solid iodine has a vapor pressure of 1.0 Hg at 39 degree C. How many moles of iodine will sublime into a 500 mL flank at this temperature? The vapor pressure of ethanol is 400 mmHg at 63.5 degree C. Its molar heat of vaporization is 39.3 kJ/nol. What is the vapor pressure of ethanol, in mmHg, at 34.9 degree C? Iridium has a radius of 136 pa and crystallizes in a face-centered cubic unit cell. What is the edge length of the unit cell? An element forms a body-centered cubic crystalline substance. The edge length of the unit cell is 287 pm and the density of the crystal is 7.92 g/cm^3. Calculate the atomic weight of the substance. (Avogadro's # = 6.022 times 10^23) Sodium hydroxide is available commercially as a 40.0 by weight aqueous solution. Calculate the molality of this sodium hydroxide solution. At 80_oC, pure liquid A has a vapor pressure of 700 mmHg and pure liquid B has a vapor pressure of 940 mm Hg. What is X_A for a solution of A and B with a normal boiling point of 80_oC? Calculate the freezing point of a solution of 20.0 methyl salicylate, C_7H_6O_2, dissolved in 800. g of benzene, C_6H_6. kf is 5.10_oC/m and the freezing point is 5.50_oC for benzene. What is the molar mass of sucrose (table sugar) if a solution prepared by dissolving 0.822 g of sucrose in 300.0 mL of water has an osmotic pressure (II) of 149 mm Hg at 298K? (II = MRT(R, gas constant = 0.08206 L.atm/K.mol)
Irving HeathcoteLv2
24 Apr 2019