Complete the table for the radioactive isotope Round your an

Complete the table for the radioactive isotope. (Round your answer to two decimal places.)

Isotope 14C

Half-life (years) - 5715

Initial Quantity (g) -

Amount After 1000 Years - 3 g

Solution

Exponential decay equation : N = Noe^(-kt)

wher No intial qty ; N = 3 g ; t = 1000 yrs ; k = 0.693/5715 =0.00012126

3 = Noe^(-0.00012126*1000)

3= No*0.885

No = 3.39 gm was the intial quantity