Problem: Lithium has two naturally occurring isotopes: Li-6 (natural abundance 7.5%) and Li-7 (natural abundance 92.5%).How many Li-6 atoms would be present, on average, in a 6000-atom sample of lithium?

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number of Li-6 atoms=6000 atoms sample (7.5 atoms Li-6100 atoms sample )

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Problem Details

Lithium has two naturally occurring isotopes: Li-6 (natural abundance 7.5%) and Li-7 (natural abundance 92.5%).

How many Li-6 atoms would be present, on average, in a 6000-atom sample of lithium?

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