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(4 Points) Gasoline is primarily a mixture of hydrocarbons and is sold with an octane rating...
plz answer both! Vitamin K is involved in normal blood clotting. When 1.45 g of vitamin...
plz answer both!
Vitamin K is involved in normal blood clotting. When 1.45 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 4.85 °C. The freezing point and Kt constant for camphor can be found here. Calculate the molar mass of vitamin K. Number g/mol Biphenyl, C12H1o, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H At 25 °C, the vapor pressure of pure benzene is 100.84...
1) Biphenyl, C 12 H 10 , is a nonvolatile, nonionizing solute that is soluble in...
1) Biphenyl, C 12 H 10 , is a nonvolatile, nonionizing solute that is soluble in benzene, C 6 H 6 . At 25 ∘ C, the vapor pressure of pure benzene is 100.84 Torr. What is the vapor pressure of a solution made from dissolving 18.1 g of biphenyl in 29.5 g of benzene? P solution = Tor 2) Assuming 100% dissociation, calculate the freezing point (Tf) and boiling point (Tb) of 2.10 m Na2SO4(aq). Colligative constants can be...
7. The vapor pressure of water at 25.0°C is 23.8 torr. Determine the mass of glucose...
7. The vapor pressure of water at 25.0°C is 23.8 torr. Determine the mass of glucose (molar mass = 180 g/mol) needed to add to 500.0 g of water to change the vapor pressure to 23.3 torr. (20 points) Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. If 0.455 g of thyroxine is dissolved in 10.0 g of benzene, the freezing point of the solution is found to...
please show work? Question 40 (8 points) What is the vapor pressure at 35°C of a...
please show work?
Question 40 (8 points) What is the vapor pressure at 35°C of a solution made by dissolving 44.6.g of sucrose, C12H22011, in 62.3 g of water? The vapor pressure of pure water at 35°C is 42.2 torr.
At its normal boiling point of 126 degree C, octane, C H has a vapor pressure...
At its normal boiling point of 126 degree C, octane, C H has a vapor pressure of 760 mm Hg. What is its vapor pressure at 25 degree C? The enthalpy of vaporization of 39.07 kJ/mol point (in degree C) of a solution prepared by dissolving 7.40 g Assume ideal behavior. K_fp for H_2 O is -1.86 degree C/m.
1) The vapor pressure of pure water at 120 °C is 1250 torr. A solution of...
1) The vapor pressure of pure water at 120 °C is 1250 torr. A solution of aniline and water has a vapor pressure of 1.2 atm at 120 °C. Assuming that Raoult’s law is obeyed, what is the mole fraction of aniline in the solution? Please show work. ----------------------------------------------------------------------- 2) Consider the following solutions, all in 1.0 kg of water: 1 mol of KBr, 1.5 mol CuCl2, 2 mol CH3COOH, and 1.5 mol CoCl3. The correct order for the respective...
6. Assume that the vapor pressure-temperature diagram below represents a mixture of (-)- menthol (MW =...
6. Assume that the vapor pressure-temperature diagram below represents a mixture of (-)- menthol (MW = 156 g/mol) and water (MW = 18 g/mol). (-)-Menthol is a monoterpene that is found naturally in mint leaves (mentha arvensis) and in peppermint oil. (a) Answer the following questions based on the diagram below. Assume the standard atmospheric pressure for all questions. į. Determine the boiling point of (-)-menthol. ii. Determine the boiling point of (-)-menthol-water mixture. iii. Determine the vapor pressure of...
I need help with problem 16. Not problem 16 under chapter 13 set 5. *9. 9....
I need help with problem 16. Not problem 16 under chapter 13 set
5.
*9. 9. The vapor pressure of pure toluene, CyHx, is 137 torr at 60°C. What is the vapor pressure of toluene in a solution made by dissolving 25.0 grams of the nonelectrolyte glucose, C6H12O6, in 50.0 grams of toluene at 60°C? 10. The vapor pressure of water is 118 torr at 55°C. How many grams of urea, CO(NH2)2 must be added to 67.4 grams of water...
Hello guys I want help to solve those question please ! Calculate the mole fraction of...
Hello guys I want help to solve those question please !
Calculate the mole fraction of phosphoric acid (H3PO4) in a
26.6% (by mass) aqueous solution.
What is the freezing point (°C) of a solution prepared by
dissolving 11.3 g of Ca(NO3)2 in 115 g of water?
The molal freezing point depression constant for water is
The concentration of CO2 in a soft drink bottled with a partial
pressure of CO2 of 4.0 atm over the liquid at 25 °C...
problems 7-9 7) Which of the following items are true for the p below? Version 2 are true for the phase diagram of c...
problems 7-9
7) Which of the following items are true for the p below? Version 2 are true for the phase diagram of carbon dioxide as seen 72.9 atm Supercritical fluid - medy Liquid Boiling Solid Puaponzatur Pressure (not to scale) 5.1 atm -- 1 Sublimation CD- noi Zobsins 11c -78.5°C -56.7°C Temperature (not to scale) A) Unlike many other substances, carbon dioxide does not have a pressure and temperature combination where liquid, solid, and gas phases coexist. B) Carbon...
plz answer both!
Vitamin K is involved in normal blood clotting. When 1.45 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 4.85 °C. The freezing point and Kt constant for camphor can be found here. Calculate the molar mass of vitamin K. Number g/mol Biphenyl, C12H1o, is a nonvolatile, nonionizing solute that is soluble in benzene, C6H At 25 °C, the vapor pressure of pure benzene is 100.84...
7. The vapor pressure of water at 25.0°C is 23.8 torr. Determine the mass of glucose (molar mass = 180 g/mol) needed to add to 500.0 g of water to change the vapor pressure to 23.3 torr. (20 points) Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. If 0.455 g of thyroxine is dissolved in 10.0 g of benzene, the freezing point of the solution is found to...
please show work?
Question 40 (8 points) What is the vapor pressure at 35°C of a solution made by dissolving 44.6.g of sucrose, C12H22011, in 62.3 g of water? The vapor pressure of pure water at 35°C is 42.2 torr.
At its normal boiling point of 126 degree C, octane, C H has a vapor pressure of 760 mm Hg. What is its vapor pressure at 25 degree C? The enthalpy of vaporization of 39.07 kJ/mol point (in degree C) of a solution prepared by dissolving 7.40 g Assume ideal behavior. K_fp for H_2 O is -1.86 degree C/m.
6. Assume that the vapor pressure-temperature diagram below represents a mixture of (-)- menthol (MW = 156 g/mol) and water (MW = 18 g/mol). (-)-Menthol is a monoterpene that is found naturally in mint leaves (mentha arvensis) and in peppermint oil. (a) Answer the following questions based on the diagram below. Assume the standard atmospheric pressure for all questions. į. Determine the boiling point of (-)-menthol. ii. Determine the boiling point of (-)-menthol-water mixture. iii. Determine the vapor pressure of...
I need help with problem 16. Not problem 16 under chapter 13 set
5.
*9. 9. The vapor pressure of pure toluene, CyHx, is 137 torr at 60°C. What is the vapor pressure of toluene in a solution made by dissolving 25.0 grams of the nonelectrolyte glucose, C6H12O6, in 50.0 grams of toluene at 60°C? 10. The vapor pressure of water is 118 torr at 55°C. How many grams of urea, CO(NH2)2 must be added to 67.4 grams of water...
Hello guys I want help to solve those question please !
Calculate the mole fraction of phosphoric acid (H3PO4) in a
26.6% (by mass) aqueous solution.
What is the freezing point (°C) of a solution prepared by
dissolving 11.3 g of Ca(NO3)2 in 115 g of water?
The molal freezing point depression constant for water is
The concentration of CO2 in a soft drink bottled with a partial
pressure of CO2 of 4.0 atm over the liquid at 25 °C...
problems 7-9
7) Which of the following items are true for the p below? Version 2 are true for the phase diagram of carbon dioxide as seen 72.9 atm Supercritical fluid - medy Liquid Boiling Solid Puaponzatur Pressure (not to scale) 5.1 atm -- 1 Sublimation CD- noi Zobsins 11c -78.5°C -56.7°C Temperature (not to scale) A) Unlike many other substances, carbon dioxide does not have a pressure and temperature combination where liquid, solid, and gas phases coexist. B) Carbon...
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