While an atoms mass number and its atomic mass are not the same, they are often quite

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While an atom’s mass number and its atomic mass are not the same, they are often quite close to one another. Consider the following: Uranium-235 has an atomic mass of 235.043 93 amu and a percent abundance of 0.73%. Uranium-238 has an atomic mass of 238.0508 amu and a percent abundance of 99.27%. Without doing any calculations or consulting any other sources, which of the following do you think represents the atomic mass of naturally occurring uranium?

(a) 234.04 amu 

(b) 236.03 amu 

(c) 237.03 amu

(d) 238.03 amu 

(e) 238.07 amu

Explain how you made your choice.

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Introductory Chemistry Atoms First

ISBN: 9780321927118

5th Edition

Authors: Steve Russo And Michael Silver

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