To calculate the amount of tritium remaining after 11 years, we can use the formula:
N = N0 * (1 - r)^t
Where:
N = final amount of tritium after t years
N0 = initial amount of tritium
r = decay rate per year (5% = 0.05)
t = number of years
Plugging in the values:
N = 450,000 * (1 - 0.05)^11
N = 450,000 * (0.95)^11
N = 450,000 * 0.3138
N = 141,210
Therefore, after 11 years, the bottle contains approximately 141,210 tritium atoms.
Tritium is a radioactive isotope of hydrogen that decays by about 5% every year. A large bottle of water that contained 450,000 tritium atoms remained undisturbed for 11 years. How much tritium does the bottle contain now?
1 answer