Question

Element X decays radioactively with a half life of 11 minutes. If there are 970 grams ofElement X, how long, to the nearest tenth of a minute, would it take the element todecay to 260 grams?

Answer 1

Solution

$y=a(0.5)^{\frac{t}{h}}$$260=970(0.5)^{\frac{11}{t}}$

Now, solve for t

The final answer

$t=5.8\text{ minutes \lparen nearest 0.1\rparen}$