Compute the molar mass of the unknown substance

Reference no: EM13265968

A 0.2436-g sample of an unknown substance was dissolved in 20.0 mL of cyclohexane. The density of cyclohexane is 0.779g/mL. The freezing-point depression was 2.5ºC. Calculate the molar mass of the unknown substance. (Kf cyclohexane = 20.0ºC/m)

Reference no: EM13265968

Questions Cloud

What is the future value of annual payments : What is the future value of annual payments of $5,931 for 17 years at 4 percent?

Find the magnitude of the contact force between boxes : a force of magnitude 7.50 N pushes three boxes with masses m1 = 1.30 kg, m2 = 2.80 kg, and m3 = 5.30 kg. Find the magnitude of the contact force between boxes 1 and 2

What is the effective annual interest rate : What is the effective annual interest rate that you are being charged by the bank? Hint: Use your financial calculator's TVM keys and solve for i.

Calculate work required to apply force over given distance : Let's say that an object covers a distance of 3 m in 5 seconds under constant acceleration. Use kinematics equations and Newton's second law to calculate the following: a) the acceleration of the can, b) the net force on the can,

Compute the molar mass of the unknown substance : A 0.2436-g sample of an unknown substance was dissolved in 20.0 mL of cyclohexane. The density of cyclohexane is 0.779g/mL. The freezing-point depression was 2.5ºC. Calculate the molar mass of the unknown substance. (Kf cyclohexane = 20.0ºC/m)

Is the canadian dollar selling at a premium or a discount : Assuming purchasing power parity (PPP) holds, what is the cost in the U.S. of a Moosehead beer if the price in Canada is Can$2.50?

Understanding of academic research and writing : Write a complete essay draft that considers what the above goals are asking of you. We've already used class time to discuss what these goals

State why is the micro boiling point determined at the point : When measuring the boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell

What is the mass of the lead : A block of wood, with density 780 kg/m3 has a cubic shape with wides 0.330 m long. A rope of negligible mass is used to tie a piece of lead to the bottom of the wood. What is the mass of the lead

User Account

All Pages