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You Discover a New Element Which Consists of Two Isotopes

Question 88

Multiple Choice

You discover a new element which consists of two isotopes.  The first isotope, 243X (mass = 242.45 u)   comprises 40.000% of the total.  The second isotope, 248X (mass = 247.11 u) accounts for the rest.  What would be the average atomic mass for your new element?


A) 242.45 u
B) 244.32 u
C) 245.25
D) 247.11

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