Multiple Choice
A naturally occurring element consists of two isotopes. The data for the isotopes are:
Isotope 1 68.5257 u 60.226 %
Isotope 2 70.9429 u ------ % Calculate the average atomic mass of this element. Hint: Percentages should always add up to 100% then find the weighted average.
A) 69.728 u
B) 69.743 u
C) 69.934 u
D) 69.972 u
E) 70.141 u
Correct Answer:

Verified
Correct Answer:
Verified
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