How Many ¹⁴C Atoms Are in a Charcoal Sample That

question 121

Multiple Choice

How many ¹⁴C atoms are in a charcoal sample that has a decay rate of 3,500 disintegrations per min? (For ¹⁴C, t_1/2 = 5,730 yr.)

• A)2.9 × 10⁷ atoms
• B)8.0 × 10^-7 atoms
• C)1.4 × 10¹⁴ atoms
• D)1.5 × 10¹³ atoms
• E)6.02 × 10²⁰ atoms