Homework Help: chemistry

Posted by heba on Sunday, June 6, 2010 at 6:53pm.

a solution consisting of 5.0 gm of an organic solute per 25 gm of CCl4 boils at 81.5 degree celecius .what is the molecular weight of the solute? If the boiling point is 76.8 degree celecius and Kb of CCl4 is 5.02 .

chemistry - DrBob222, Sunday, June 6, 2010 at 7:06pm
delta T = Kb*m
Calculate m

m = moles/kg solvent.
Calculate moles

moles = grams/molar mass
calculate molar mass.
Note the correct spelling of celsius.

Answer this Question

Related Questions

chemistry - .46 gm of magnesium produces .7667 gm of magnesium oxide,.3 gm of ...
Science - What is the molarity of a solution prepared by dissolving 60 gm of ...
chemical - NH4Cl at temperature 20 degree lattice length 3.88 angstrum and ...
physics - A piece of metal of mass 112g is heated 100 degree C.,and dropped into...
9th grade - 10 gm of silver nitrate solution is added to 10 gm of sodium ...
9th grade - 10 gm of silver nitrate solution is added to 10 gm of sodium ...
chemistry - calculate the weight of crystal formed on cooling 80 gm of saturated...
chemistry - Calculate the number of moles and atoms. A)64 gm of O2 B)58.9 gm of ...
organic chem - A mixture of ethyl iodide (b.p. 72.3) and water boils at 63.7 C. ...
chemistry - A benzene solution of a nonvolatile solute exhibits a vapor pressure...

For Further Reading

First Name:
School Subject:
Answer: