- #1
Jacobpm64
- 239
- 0
(a) The half-life of radium-226 is 1620 years. Write a formula for the quantity, Q, of radium left after t years, if the initial quantity is Q0.
Check me on this one:
Q = (Q0 / 2(1620/t))
(b) What percentage of the original amount of radium is left after 500 years?
Check this one as well:
Q = (Q0 / 21620/500)
Q = (Q0 / 23.24)
Q = Q0 * 2-3.24
Q = Q0(0.1058)
10.6%
Check me on this one:
Q = (Q0 / 2(1620/t))
(b) What percentage of the original amount of radium is left after 500 years?
Check this one as well:
Q = (Q0 / 21620/500)
Q = (Q0 / 23.24)
Q = Q0 * 2-3.24
Q = Q0(0.1058)
10.6%