Homework Help: chemistry

Posted by Aubrey on Tuesday, December 6, 2011 at 5:30pm.

A 2.97 g sample of a molecular compound
is dissolved in 103 g of tetrachloromethane
(carbon tetrachloride). The normal boiling
point of the solution is 61.51C, the normal
boiling point of CCl4 is 61.2C. The boiling
point constant for CCl4 is 4.95 K · kg/mol.
What is the molar mass of the compound?

chemistry - DrBob222, Tuesday, December 6, 2011 at 6:49pm
delta T = Kb*molality
Solve for molality

m = moles/kg solvent
Solve for moles

moles = grams/molar mass
Solve for molar mass.
chemistry - mohamed, Friday, December 30, 2011 at 4:03am
pv=nrt

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