Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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3. The atomic weight of sulfur is 32 g/mol. By using the result from (2), write the molecular formula of sulfur as Sn. What is n?
4.The actual molecular formula of sulfur is S8. Calculate the theoretical molecular weight of
sulfur and the percent error in your experiment.
Transcribed Image Text:3. The atomic weight of sulfur is 32 g/mol. By using the result from (2), write the molecular
formula of sulfur as Sn. What is n?
4.The actual molecular formula of sulfur is Ss. Calculate the theoretical molecular weight of
sulfur and the percent error in your experiment.
Transcribed Image Text:Cooling curve of pure naphthalene
Cooling graph of naphthalene and sulfur mixture
100
90
80
70
60
Freezing point 73'C
75
50
40
-Temperature )
30
70
20
10
65
100
150
200
100
200
300
400
Time, t (second)
t (s)
Freezing point of pure naphthalene T1 = ..°C
Freezing point of solution T2 =.C
Freezing point of depression from graph AT
Weight of naphthalene= 5,028g
Weight of Sulfur- 1,011g
Kefor naphthalene= 6,8 °C/m
.... ..
....°C
1.Calculate the molality of the solution, m
2.Calculate the molecular weight of sulfur by using m, Wland W2
Temperature ("C)
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