The relative atomic mass of a naturally occurring lithium consisting 90%Li and 10%Li is?

The relative atomic mass of a naturally occurring lithium consisting 90%Li and 10%Li is?

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Answers (4)

90% 7Li and 10% 6Li from there
7×90/100 + 6×10/100
63/10 + 6/10
6.3+0.6=6.9
isaaq
4 months ago
90% 7Li and 10% 6Li from there
7×90/100 + 6×10/100
63/10 + 6/10
6.3+0.6=6.9
EmX
4 months ago
The question is incomplete, don't stress yourself if you couldn't figure it out.
it's supposed to be like this

he relative atomic mass of a naturally occurring lithium consisting of 90%7 Li and 10%6 Li is
A. 6.9
B. 7.1
C. 6.2
D. 6.8..


That's the original question but i modified it to what it's supposed to look like.

see solution below.
peace
4 months ago
90% 7Li and 10% 6Li from there
7×90/100 + 6×10/100
63/10 + 6/10
6.3+0.6=6.9
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