
Braxton T.
asked 11/09/17what element has an exact average mass of 30.46382238
or a rounded mass of 30.46
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1 Expert Answer

Mark M. answered 11/09/17
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Mathematics Teacher - NCLB Highly Qualified
Silicon, 28.0855
Phosphorus, 30.9738
Something alien?

Arturo O.
It would have to be an average of common isotopes of the same element, with each isotope weighted by its relative abundance in nature.
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11/09/17
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Kenneth S.
11/09/17