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?
Homework Answers
Add Answer to:
A solution was prepared by dissolving 1.846 grams of an unknown
compound (nonelectrolyte) in 15.75 grams...
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 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
A solution is made by dissolving 58.125g of sample of an unknown, nonelectrolyte compound in water....
A solution is made by dissolving 58.125g of sample of an unknown, nonelectrolyte compound in water. The mass of the solution is exactly 750.0g. The boiling point of this solution is 100.220 ∘C. What is the molecular weight of the unknown compound? Solvent Formula Kf value* (°C/m) Normal freezing point (°C) Kb value (°C/m) Normal boiling point (°C) water H2O 1.86 0.00 0.512 100.00 benzene C6H6 5.12 5.49 2.53 80.1 cyclohexane C6H12 20.8 6.59 2.92 80.7 ethanol C2H6O 1.99 –117.3...
A solution is prepared by dissolving 10.00 g glycine, an amino acid, in 50.0 g water....
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]
31.)Show the calculation of the boiling point of a solution made by dissolving 15.9 grams of...
31.)Show the calculation of the boiling point of a solution made by dissolving 15.9 grams of the nonelectrolyte C3H7OH in 350 grams of water. Kb for water is 0.51, BP of pure water is 100oC. 30.)Show the calculation of the freezing point of a solution made by dissolving 12.6 grams of the nonelectrolyte C2H5OH in 200 grams of water. Kf for water is 1.86, FP of pure water is 0oC. 29.)Show the calculation of the volume of 0.238 M solution...
Question 27 (1 point)B A solution is prepared by dissolving 4.12 grams of a nonelectrolyte in...
Question 27 (1 point)B A solution is prepared by dissolving 4.12 grams of a nonelectrolyte in 60.0 grams of water. If the boiling point of this solution is 100.15°C, what is the molar mass of the unknown substance? 844 g/mol 851 g/mol 0.351 g/mol 1.28 g/mol 234 g/mol
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.
Determine the molar mass of an unknown non-electrolyte compound given the following data: 1.453 grams of...
Determine the molar mass of an unknown non-electrolyte compound given the following data: 1.453 grams of the unknown compound is dissolved in 10.08 grams of water (Kf = 1.853 0C/m). The solution freezes at -1.47 0C. What is the molar mass of the unknown compound?
8. A solution is prepared by dissolving 0.434 moles of ethanol, C2H60, in 150. grams of...
8. A solution is prepared by dissolving 0.434 moles of ethanol, C2H60, in 150. grams of water. Calculate the molality of the solution, freezing point of the solution, and boiling point of the solution. (Kf of H2O 1.86°C/m; fp of H20 = 0.00°C; Kb of H20 = 0.512°C/m; BP of H20 100.00°C)
Question 27 (1 point)B A solution is prepared by dissolving 4.12 grams of a nonelectrolyte in 60.0 grams of water. If the boiling point of this solution is 100.15°C, what is the molar mass of the unknown substance? 844 g/mol 851 g/mol 0.351 g/mol 1.28 g/mol 234 g/mol
8. A solution is prepared by dissolving 0.434 moles of ethanol, C2H60, in 150. grams of water. Calculate the molality of the solution, freezing point of the solution, and boiling point of the solution. (Kf of H2O 1.86°C/m; fp of H20 = 0.00°C; Kb of H20 = 0.512°C/m; BP of H20 100.00°C)
Most questions answered within 3 hours.
-
____ created the regulation of product labeling, prohibited the
interstate sale of illegal substances. It was...
asked 45 seconds ago -
Given the Uniform Amount of an annual payment, A = $16,000 per
year, an interest rate,...
asked 10 minutes ago -
You are the CIO for a large university hospital. The medical
staff of the cardiac ward...
asked 18 minutes ago -
Why do you use a bacterial culture plate when working with
viruses?
How do you count...
asked 23 minutes ago -
A cord is used to vertically lower an initially stationary block
of mass M = 7.6...
asked 24 minutes ago -
1.What is the structural formula of vanillin?
Draw the molecule on the canvas by choosing buttons...
asked 25 minutes ago -
You have a string with a mass of 0.0127 kg. You stretch the
string with a...
asked 45 minutes ago -
When the company sells goods on account, the following
occurs:
Sales decrease & Cash increases
Sales...
asked 49 minutes ago -
Wings & Co. is instituting a new policy on Tuesday nights.
Wings will be sold at...
asked 55 minutes ago -
Java two dimensional arrays
Create a method named curiousNumber that takes an integer named
num as...
asked 1 hour ago -
Jeremiah Restoration Company completed the following selected
transactions during January:
Jan. 1.
Established a petty cash...
asked 1 hour ago -
Question 1: describe a situational context where you experienced
cognitive dissonance
Question 2: describe what coping...
asked 1 hour ago