Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN: 9781285686691
Author: Crouch
Publisher: Cengage
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Transcribed Image Text:Data Sheet
UNKNOWN NUMBER:
1
49.83
4575
8.08
12.47
I1.031
1.44
1. Mass of test tube + naphthalene
2. Mass of empty test tube
%3D
3. Mass of naphthalene
4. Mass of vial + Unknown
%3D
5. Mass of vial
%3D
6. Mass of Unknown
Cooling curve data
Pure Naphthalene
Naphthalene + Unknown
Temp
Time
Temp
Time
Temp
Time
Temp
Time
79 0.5
T4-9 5
20:7 5:30
78:2 020
749 S:30
85.2 30
84.5
B15 1:30
70.9 6
6.70
72 30
14.9 6
14.9 6:30
75.6 1:08C 74 9
75:52
20.0
69.8 7.
69.4 7:30
68.9
68:3
76:5. Imit
74
75.02.9
749,3.
28.2 2
76 Y
25.0
22. 3.
.
2:10
"NS 130
3:30 24.0 9
23-4 9:30
74.9.4.30 23.5
8:)0
679 9
67.2 9.30
.
21.8
71.4 4
330
74.9
94.9 u
१:१०
:30 67.2 10
20.9 S
b6.5 10.30
75-5
750
10:50
66.0 1
7. Freezing point of pure Naphthalene from cooling curve =
8. Freezing point of solution
9. AT
10. Molality of solution, m
11. Molar mass of Unknown
12. Include graphs of cooling curves
CALCULATIONS
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