boron has two isotopes B-10 and B-11. the average atomic mass of boron

1.	boron has two isotopes B-10 and B-11. the average atomic mass of boron is found to be 10.80u. Calculate the percentage abundance of these isotopes .
Answer» ONG>Answer: answr search What WOULD you like to ask? 11th Chemistry Structure of Atom Isobars and Isotopes Boron has two isotopes B - ... CHEMISTRY avatar Asked on December 26, 2019 by Adwitiyaa Shakeel Boron has two isotopes B - 10 and B - 11. If the average atomic mass of boron is 10.80 u. What is the percentage of a heavier isotope? MEDIUM Help best friend Study later ANSWER Let B-10 = x% and B-11 = (100-x)% average atomic mass = 10x + (100 - x)/100 = 10.80 10x + 11(100 - x) = 1080 10x + 1100 - 11x = 1080 x = 20 B-10 = 20% and B-11 = (100-20) = 80% Thus, the percentage of a heavier isotope is 80%.

boron has two isotopes B-10 and B-11. the average atomic mass of boron is found to be 10.80u. Calculate the percentage abundance of these isotopes .

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Boron has two isotopes B - ...

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Asked on December 26, 2019 by

Adwitiyaa Shakeel

Boron has two isotopes B - 10 and B - 11. If the average atomic mass of boron is 10.80 u. What is the percentage of a heavier isotope?

MEDIUM

Help best friend

Study later

ANSWER

Let B-10 = x%

and B-11 = (100-x)%

average atomic mass = 10x + (100 - x)/100 = 10.80

10x + 11(100 - x) = 1080

10x + 1100 - 11x = 1080

x = 20

B-10 = 20% and B-11 = (100-20) = 80%

Thus, the percentage of a heavier isotope is 80%.

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