mindygallardo
Oct 12, 2010, 10:37 AM
The amount of radium 226 remaining in a sample that originally contained A grams is approximately C(t) = A(0.999 567)t where t is time in years. Find the half-life to the nearest 100 years.
Unknown008
Oct 12, 2010, 11:11 AM
I assume you mean:
C_t = A(0.999567)^t
Do some calculation.
Let C be the initial amount of Radium.
C = A
When C halves, we get:
C' = A(0.999567)^t
Where:
C' = \frac{C}{2}
Replacing back, we get:
\frac{C}{2} = \frac{A}{2} = A(0.999567)^t
Therefore;
\frac12 = (0.999567)^t
Find the value of t.
Post what you get! :)