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In Chemistry / High School | 2014-04-29

Boron found in nature has an atomic weight of 10.811 and is made up of the isotopes [tex]^{10}B[/tex] (mass 10.013 amu) and [tex]^{11}B[/tex] (mass 11.0093 amu). What percentage of naturally occurring boron is made up of [tex]^{10}B[/tex] and [tex]^{11}B[/tex] respectively?

a. 30:70
b. 25:75
c. 20:80
d. 15:85

Asked by Scutt223

Answer (1)

C 20:80 because the equation would be (10×.2)+(11×.8)

Answered by jwilck | 2024-06-10

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