A solution is prepared by dissolving 10.00 g glycine, an amino acid, in 50.0 g water....
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A solution is prepared by dissolving 10.00 g glycine, an amino acid, in 50.0 g water. What is the molar mass of glycine if the solution freezes at -4.96 oC? Given: [Kf = 1.86 deg Kg/mol for H2O]
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A solution is prepared by dissolving 10.00 g glycine, an amino
acid, in 50.0 g water....
A solution was prepared by dissolving 1.846 grams of an unknown compound (nonelectrolyte) in 15.75 grams...
A solution was prepared by dissolving 1.846 grams of an unknown compound (nonelectrolyte) in 15.75 grams of water (Kf = 1.86 oC/m). The solution freezes at -1.50 oC. If pure water freezes at 0.00 oC, what's the molar mass of unknown compound?
A solution contains 0.180 g of an unknown nonelectrolyte solute in 50.0 g of water. The...
A solution contains 0.180 g of an unknown nonelectrolyte solute in 50.0 g of water. The solution freezes at –0.040 0C (notice the negative sign). A) What is the molar mass of the unknown solute? B) What is the boiling temperature of the solution? Kf(water) = 1.86 K kg mol-1 ; Kb(water) = 0.51 K kg mol-1 . Assume that the solute only exists as a monomer in aqueous solution.
A solution prepared by dissolving 90.0 mg of a sugar (a molecular compound and a nonelectrolyte) in...
A solution prepared by dissolving 90.0 mg of a sugar (a molecular compound and a nonelectrolyte) in 1.00 g of water froze at -0.930°C. What is the molar mass of this sugar (g/mol)? The value of Kf is 1.86°C/m.
A solution prepared by dissolving 513 mg of a sugar (a molecular compound and a nonelectrolyte)...
A solution prepared by dissolving 513 mg of a sugar (a molecular compound and a nonelectrolyte) in 1.00 g of water froze at -2.79 °C. What is the molar mass of this sugar? The value of Kf is 1.86°C/m. Answer in g/mol.
A solution is prepared by dissolving 52.4 g of FeCl2 in 1,098.3 g of H2O. What...
A solution is prepared by dissolving 52.4 g of FeCl2 in 1,098.3 g of H2O. What is the freezing point of the solution in °C, assuming ideal behavior? (MM FeCl2 = 126.751 g/mol; Kf for water = 1.86 °C/m). Report your answer to 3 decimal places.
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
The amino acid glycine has pKa values of 2.4 and 9.8. A solution was made by...
The amino acid glycine has pKa values of 2.4 and 9.8. A solution was made by dissolving 1.15 g of glycine sodium hydrate (shown below) in 100.00 mL of water. The molecular weight of the salt is 115 g/mol 5. Нас .Н20 Na+ H2N What is the pH of the salt solution? 20-mL aliquot of would result, making sure to label at least four sets of values on the graph. a ior itrated with 0.100 M b on curve that...
1. A solution was prepared by dissolving 2.20g of urea (H2NCONH2) in 50.00g of water. If...
1. A solution was prepared by dissolving 2.20g of urea (H2NCONH2) in 50.00g of water. If for H2O Tb = 100C, Tf = 0C, Kb = 0.52C / m and Kf = 1.86C / m, determine the freezing and boiling point of the solution. 2. A solution is prepared by dissolving 17.41g of a substance X in 600g of benzene and the resulting solution is frozen at 4.00C. If the freezing point of pure benzene is 5.55C and its Kf...
A cyclohexane (c-hex) solution is prepared by fully dissolving 9.11g of a newly synthesized organic compound...
A cyclohexane (c-hex) solution is prepared by fully dissolving 9.11g of a newly synthesized organic compound in 100.g cyclohexane. The freezing point of the solution is depressed by -5.80 oC from the normal freezing point of 6.55 oC for pure cyclohexane ( Kf,c-hex= 20.0 oC kg/mol , MWc-hex = 84.0 g/mol). (a) What is the molecular weight (molar mass) of the organic compound? (b) What is the vapor pressure of the cyclohexane for this solution at 298K?
A solution is prepared by dissolving 7.8 g of ethylene glycol (HOCH2CH2OH) in 50.0 g of...
A solution is prepared by dissolving 7.8 g of ethylene glycol (HOCH2CH2OH) in 50.0 g of water to produce 56.9 mL of solution. Ethylene glycol is non-volatile. a. What is the vapor pressure of the solution at 100oC? b. What is the boiling point of the solution? Kb = 0.51 oC/m
The amino acid glycine has pKa values of 2.4 and 9.8. A solution was made by dissolving 1.15 g of glycine sodium hydrate (shown below) in 100.00 mL of water. The molecular weight of the salt is 115 g/mol 5. Нас .Н20 Na+ H2N What is the pH of the salt solution? 20-mL aliquot of would result, making sure to label at least four sets of values on the graph. a ior itrated with 0.100 M b on curve that...
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