Question
100g of radioactive mass.has a half life of 5 days. Calculate the mass decayed off after 15 days
Answers
GPT 3.5
After 15 days, there have been 3 half-lives elapsed (5 days x 3 = 15 days).
Each half-life reduces the mass by half, so the mass decayed after 15 days can be calculated as:
Original mass: 100g
After 1st half-life: 50g (100g / 2)
After 2nd half-life: 25g (50g / 2)
After 3rd half-life: 12.5g (25g / 2)
Therefore, the mass decayed off after 15 days would be 100g - 12.5g = 87.5g.
Each half-life reduces the mass by half, so the mass decayed after 15 days can be calculated as:
Original mass: 100g
After 1st half-life: 50g (100g / 2)
After 2nd half-life: 25g (50g / 2)
After 3rd half-life: 12.5g (25g / 2)
Therefore, the mass decayed off after 15 days would be 100g - 12.5g = 87.5g.