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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.
- Spring '14