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Freezing Point Of Naphthalene
Beginning of paper
I. Purpose
To determine the freezing point of a known substance, naphthalene
II. Materials
ringstand gas source
test tube test tube clamps
thermometer naphthalene
Bunsen burner goggles
hose stopwatch
III. Procedure
1. Assemble the Bunsen burner, attaching one end of the hose to the
burner and the other to a gas .... Middle of paper
.... is now frozen to remove the thermometer. Properly dispose of
the naphthalene liquid as instructed by the teacher.
IV. Data
Time Elapsed 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
79.0oC
2:00 86.1oC 8:00
79.0oC
2:30 84.6oC 8:15
79.0oC
2:45 82.3oC 8:30
79.0oC
3:00 81.2oC 8:45
79. ....
--------------
Number of words: 441
Number of pages: 2 (approx. 250 words per double-spaced page)
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