Question

A certain radioactive isotope has a half life of 6 hours. The starting amount is 100 grams. Write an exponential function to model this scenario. How much of the isotope remains after 12 hours?

Answer 1

Answer:

25 gm

Step-by-step explanation:

N₍x₎ = N₍₀₎ * (1/2)ˣ/ˣ₍₁/₂₎

N₍₁₂₎ = 100 * (1/2)¹²/₆ = 100 * (1/2)² = 25