1) An aqueous solution containing 15.9 g of an unknown molecular (nonelectrolyte) compound in 103.0 g...
1) An aqueous solution containing 15.9 g of an unknown molecular (nonelectrolyte) compound in 103.0 g of water was found to have a freezing point of -1.5 ∘C.
Calculate the molar mass of the unknown compound.
b) Determine the required concentration (in percent by mass) for an aqueous ethylene glycol (C2H6O2) solution to have a boiling point of 109.3 ∘C.
c) What mass of salt (NaCl) should you add to 1.90 L of water in an ice cream maker to make a solution that freezes at -14.8 ∘C ? Assume complete dissociation of the NaCl and density of 1.00 g/mL for water.
d) A 1.21 m aqueous solution of an ionic compound with the formula MX2 has a boiling point of 101.55 ∘C.
Calculate the van't Hoff factor (i) for MX2 at this concentration.
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1) An aqueous solution containing 15.9 g of an unknown molecular
(nonelectrolyte) compound in 103.0 g...
An aqueous solution containing 17.3 g of an unknown molecular (nonelectrolyte) compound in 102.0 g of...
An aqueous solution containing 17.3 g of an unknown molecular (nonelectrolyte) compound in 102.0 g of water was found to have a freezing point of -1.6 ?C. Part A Calculate the molar mass of the unknown compound.
An aqueous solution containing 16.2 g of an unknown molecular (nonelectrolyte) compound in 109.5 g of...
An aqueous solution containing 16.2 g of an unknown molecular (nonelectrolyte) compound in 109.5 g of water was found to have a freezing point of -1.8 ∘C. Calculate the molar mass of the unknown compound. Please show all work.
An aqueous solution containing 15.0 g of an unknown molecular (nonelectrolyte) compound in 100.5 g of...
An aqueous solution containing 15.0 g of an unknown molecular (nonelectrolyte) compound in 100.5 g of water has a freezing point of -1.9 ∘C. Calculate the molar mass of the unknown compound. I am stumped because I am not given Kf??
A 1.22 m aqueous solution of an ionic compound with the formula MX2 has a boiling...
A 1.22 m aqueous solution of an ionic compound with the formula MX2 has a boiling point of 101.53 ∘C. Calculate the van't Hoff factor (i) for MX2 at this concentration.
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.
An aqueous solution containing 35.9 g of an unknown molecular compound in 150.0 g of water...
An aqueous solution containing 35.9 g of an unknown molecular compound in 150.0 g of water was found to have a freezing point of -1.3 degree C. Calculate the molar mass of the unknown compound.
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?
An aqueous solution containing 17.5 g of an unknown molecular compound in 100.0 g of water...
An aqueous solution containing 17.5 g of an unknown molecular compound in 100.0 g of water was found to have a freezing point of -1.8
1.When a solution is made from 32.2 g of an unknown nonelectrolyte dissolved in 151 g...
1.When a solution is made from 32.2 g of an unknown nonelectrolyte dissolved in 151 g of solvent, the solution boils at 83.44 °C. The boiling point of the pure solvent and its Kb are 79.31 °C and 4.47 °C/m, respectively. Calculate the molar mass of the unknown electrolyte in g/mol. 2. Calculate the molar mass (in g/mol) of an unknown nonelectrolyte if 0.898 g dissolved in 268.7 mL of water at 30.13 °C has an osmotic pressure of 68.1...
An ethylene glycol solution contains 27.6 g of ethylene glycol (C2H6O2) in 92.0 mL of water....
An ethylene glycol solution contains 27.6 g of ethylene glycol (C2H6O2) in 92.0 mL of water. (Assume a density of 1.00 g/mL for water.) Determine the freezing point of the solution. Determine the boiling point of the solution.
An aqueous solution containing 35.9 g of an unknown molecular compound in 150.0 g of water was found to have a freezing point of -1.3 degree C. Calculate the molar mass of the unknown compound.
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