Question

14. Carbon-14 emits beta radiation and decays with a half-life (t) of 5730 years. Assume

Answer 1

Answer: 375 g

Explanation:

Formula used :

$a=\frac{a_o}{2^n}$

where,

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

$a_o$ = Initial amount of the reactant = 100 g

n = number of half lives = 4

Putting values in above equation, we get:

$a=\frac{6000}{2^4}$

$a=375g$

Therefore, the amount of carbon-14 remains at the end of four half-lives is 375 g