A 100g sample of Carbon-14 has a half-life of 5 years. How much Carbon-14 is left after 10 years?

The amount of carbon-14 left after 10 years is 25 g

Explanation:

Formula used :

where,

a = amount of reactant left after n-half lives = ?

= Initial amount of the reactant = 100 g

n = number of half lives =

Putting values in above equation, we get:

Therefore, the amount of carbon-14 left after 10 years is 25 g

the answers are

c and c