Question

The half-life of 131L is 0.0220 years. how much of a 500.0 mg sample remains after 0.0220 years? ​

Answer 1

To find out how much of a 0.00444 g sample of tritium remains after 5.0 years, use the half-life formula.

Step-by-step explanation:

The half-life of tritium (hydrogen-3) is 12.3 years. To find out how much of a 0.00444 g sample of tritium remains after 5.0 years, we can use the half-life formula:

Amount remaining = Initial amount × (1/2)^(time / half-life)

Using this formula, we can calculate:

Amount remaining after 5.0 years = 0.00444 g × (0.5)^(5.0 years / 12.3 years) ≈ 0.00214 g