Exp 16 Molar Mass from Freezing Point UPDATED

Time on excel and follow the instructions given to

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Unformatted text preview: emperature vs. Time) on Excel and follow the instructions given to obtain the freezing points of the naphthalene and the naphthalene-sulfur solutions. Record the freezing point values in the appropriate spaces below. Trial #1 Trial #2 Freezing point of Naphthalene °C Freezing point of Naphthalene-Sulfur °C Freezing point lowering, ∆Tf ± 0.5 °C Average Freezing point lowering, ∆ Tf ± 0.5 °C Molality of Sulfur in the Naphthalene m Moles of Sulfur moles Molar Mass of Sulfur g/mole Average Molar Mass of Sulfur g/mole Molecular Formula of Sulfur EFFECTS OF ERROR Assume that the uncertainties in the masses of sulfur and naphthalene are each ± 0.005 g. Trial #1 Trial #2 Fractional uncertainty in the Mass of Naphthalene Fractional uncertainty in the Mass of Sulfur Fractional uncertainty in the Freezing Point Lowering Fractional uncertainty in the Molar Mass of Sulfur Uncertainty in the Molar Mass of Sulfur Average Uncertainty in the Molar Mass of Sulfur ± g/...
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This document was uploaded on 02/23/2014 for the course CHEMISTRY 1121L at St. Johns Duplicate.

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