A Chemistry student at Agora is calculating the average atomic mass of Potassium using the following data. Relative abundance Isotope K-39 K-41 Their setup and calculation are. Mass (amu) 93-12% 6.88% 38.964 40.962 X Atomic Mass 38.964 amu 40.962 amu Relative Abundance ( divide by 100) 0.0688 0.9312 = 2.681 = 38.144 40.823 amu The student calculated the average atomic mass to be 40.823 amu but it is 39.098 amu on the periodic table. What did the student do incorrectly? Use CER!
A Chemistry student at Agora is calculating the average atomic mass of Potassium using the following data. Relative abundance Isotope K-39 K-41 Their setup and calculation are. Mass (amu) 93-12% 6.88% 38.964 40.962 X Atomic Mass 38.964 amu 40.962 amu Relative Abundance ( divide by 100) 0.0688 0.9312 = 2.681 = 38.144 40.823 amu The student calculated the average atomic mass to be 40.823 amu but it is 39.098 amu on the periodic table. What did the student do incorrectly? Use CER!
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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A
Isotope
K-39
K-41
mistry student at Agora is calculating the average atomic mass of Potassium using the following data.
Relative abundance
93.12 %
6.88 %
Their setup and calculation are.
Mass (amu)
11:07 AM
38.964
40.962
Atomic Mass
38.964 amu
40.962 amu
X Relative Abundance (% divide by
100)
0.0688
0.9312
33%
= 2.681
= 38.144
40.823 amu
×
The student calculated the average atomic mass to be 40.823 amu but it is 39.098 amu on the periodic table.
What did the student do incorrectly? Use CER!
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