Answer:
THE BONE WAS 11, 460 YEARS WHEN IT CONTAIN 7 g OF CARBON-14
Explanation:
To calculate the age of a substance using isotopic dating, we use the equation below;
how old (time) = number of lives (n) * half life (t1/2)
n =the number of lives from 7g to 1.75 g
n = 7 -----> 3.5 ------> 1.75 = 2 lives
t1/2 = 5730 years.
How old was the fossil when it contains 7 g of carbon- 14 will be;
how old = n * t1/2
= 2 * 5730 years
= 11, 460 years.
The bone contains 7 grams of carbon-14 at 11, 460 years.
