Chemistry, 13.01.2020 21:31 mmm5398

Lithium has two isotopes.
li-6 and li-7.
li-6 mass = 6.015121amu
li-7 mass = 7.016003amu
lithium mass = 6.94049amu

what is percent abundance of li-6?

i know that there is an equation:
6.9409 = (% abundance li-6 * weight of li-6) + (% abundance li-7 * weight of li-7)

i don't know how to use it.

Answers: 1

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You know the right answer?

Lithium has two isotopes.
li-6 and li-7.
li-6 mass = 6.015121amu
li-7 mass = 7.016...