Answer:
C. 2000 years
Step-by-step explanation:
Data provided in the question
Half life = 1,000 years
Number of homer moles contained = 2
And, for lisa = 6
Based on the above information, the computation is shown below:
But before that we need to do the following calculations
Total moles by combing the homer and lisa is
= 2 moles + 6 moles
= 8 moles
Now the present fraction of homer is
[tex]= \frac{2\ moles}{8\ moles}[/tex]
[tex]= \frac{1}{4}[/tex]
[tex]= \frac{1}{2^2}[/tex]
Therefore the approximate age of rocks is
[tex]= 1,000\ years \times 2[/tex]
= 2,000 years
Hence, the correct option is c.
