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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Transcribed Image Text:The following question refer to the phase diagram shown here.
Composition (at% Sn)
60
T
Temperature (°C)
300
200
100
0
0
0
327°C
a
O 50 %
O 100%
20
T
O 100 wt% Sn
O 98 wt% Sn
O 0.3
O 90 wt% Sn
O 0.7
a + L
18.3
40
T
20
T
183°C
a + ß
40
T
Liquid
61.9
80
B+L
80
232°C
97.8
100
18
600
100
60
Composition (wt% Sn)
(Pb)
(Sn)
Adapted from Binary Alloy Phase Diagrams, 2nd edition, Vol. 3, T. B. Massalski (Editor-in-Chief), 1990. Reprinted
by permission of ASM International, Materials Park, OH.
In the Pb-Sn phase diagram, what is the approximate mass fraction of the 3 phase for an alloy with 90 wt% Sn and at 200°C?
500
400
300
200
100
Temperature (°F)
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