Answer
When $t=0$:
$Q=16~grams$
Work Step by Step
$Q=16(\frac{1}{2})^{\frac{t}{24,100}}$
When $t=0$:
$Q=16(\frac{1}{2})^{\frac{0}{24,100}}=16(\frac{1}{2})^0=16\times1=16$
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