Chemistry, 30.10.2020 05:40, khristaviaaa

Selenium-81 has an abundance of 21.91% and a mass of 80.65 amu. Selenium-84 has an abundance of 23.35% and a mass of 83.67 amu.
Selenium-80 has an abundance of 54.74% and a mass of 79.64 amu.
What is the average atomic mass of Selenium according to these values?

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Selenium-81 has an abundance of 21.91% and a mass of 80.65 amu. Selenium-84 has an abundance of 23.35% and a mass of 83.67 amu. Selenium-80 has an abundance of 54.74% and a mass of 79.64 amu. What is the average atomic mass of Selenium according to these values?

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Selenium-81 has an abundance of 21.91% and a mass of 80.65 amu. Selenium-84 has an abundance of 23.35% and a mass of 83.67 amu.
Selenium-80 has an abundance of 54.74% and a mass of 79.64 amu.
What is the average atomic mass of Selenium according to these values?