Question

Carbon-14 is commonly used to determine how old fossils and artifacts are. You have a 0.5 milligram sample of Carbon-14 and it is put into storage for 100 years.(1) How many half-lives have passed in 100 years?(2) How much Carbon-14 is left after 100 years?Answer with 3 significant figures & no units (just type in the number only).Question 14 options:Blank # 1:Blank # 2:

Answer 1

Explanations:

The formula for calculating the exponential decay of an element is expressed as:

`N(t_{(1)/(2)})=N_0e^{-\lambda t(1)/(2)}`

No is the original sample

N(t) is the final sample after time "t"

λ is the decay constant

t is the time

Given the following parameters

No = 4.0grams

t = 30 seconds

Determine the decay constant