2.70 Naturally occurring boron consists of two isotopes: 1°B (19.9%) with an isotopic mass of 10.0129 amu and "B (80.1%) with an isotopic mass of 11.009 31 amu. What is the atomic mass of boron? Check your answer by looking at a periodic table.

Chemistry: Principles and Reactions
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Author:William L. Masterton, Cecile N. Hurley
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Chapter2: Atoms, Molecules, And Ions
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Problem 25QAP: Naturally occurring silver (Ag) consists of two isotopes. One of the isotopes has a mass of...
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2.70 Naturally occurring boron consists of two isotopes:
1°B (19.9%) with an isotopic mass of 10.0129 amu and
"B (80.1%) with an isotopic mass of 11.009 31 amu. What is
the atomic mass of boron? Check your answer by looking
at a periodic table.
Transcribed Image Text:2.70 Naturally occurring boron consists of two isotopes: 1°B (19.9%) with an isotopic mass of 10.0129 amu and "B (80.1%) with an isotopic mass of 11.009 31 amu. What is the atomic mass of boron? Check your answer by looking at a periodic table.
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