Homework Help: Chemistry

Posted by Justin on Saturday, November 6, 2010 at 10:52pm.

A compound has the empirical formula CHCl. A 256 mL flask, at 373 K and 750. torr, contains 0.800 g of the gaseous compound. Give the molecular formula.

Chemistry - DrBob222, Sunday, November 7, 2010 at 12:07am
Use PV = nRT and solve for n.
Then n = grams/molar mass
Solve for molar mass.
Divide molar mass/empirical mass and round to a whole number which I will call x. Then (CHCl)x will be the molecular formula.

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