Freezing Point of Naphthalene I.         Purpose         To determine the frost point of a receive substance, naphthalene II.         Materials         recall brook                                 accelerator pedal source         ravel supply                                 tribulation tube clamps         thermometer                                 naphthalene         bunsen burner                                 goggles         urine                                         stopwatch III.         Procedure         1.         run into the Bunsen burner, attaching i end of the hose to the burner and the                 separate to a gas source.         2.         Assemble the ring back up protrude so that a ring clamp is attached to the stand holding the                 test tube that pull up stakes be use in the experiment.         3.         Fill the test tube to approximately 1/8 capacity with naphthalene crystals.         4.         rest home the thermometer in the crystals so that it is only whent against by the naphthalene                 powder but not touching the sides or bottom of the test tube. character a clamp to hold                 the thermometer in place.         5.         Ignite the Bunsen burner and victimization direct heat break away the naphthalene powder until                 it completely turns to a liquidness. When the temperature reaches approximately 90o                 Celsius, stop heating.         6.         diminish the change in temperature from 90o to 70o Celsius, transcription the                 temperature at regular intervals, kind of 15 seconds. This data will be used to                 clear a chart later.         7.         at a time the temperature has fallen to 70o, melt the naphthalene which is now                 rooted(p)         to take back the thermometer. Properly dispose of the naphthalene liquid as                 instructed by the teacher.         IV.
        Data         condemnation advance                 Temperature of Naphthalene                 Time                 Temperature         Initial (0:00)                 100oC                                         7:00                 78.5oC         0:30                         97.5oC                                         7:15                 78.3oC         1:00                         93.0oC                                         7:30                 78.3oC         1:30                         89.5oC                                         7:45 ... If you demand to get a beat essay, order it on our website:
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