Answer
$1.53 \times 10^{-11}$
Work Step by Step
Multiply the corresponding parts to obtain:
$=(5.1 \cdot 3) \times (10^{-8} \cdot 10^{-4})
\\=15.3 \times 10^{(-8)+(-4)}
\\=15.3 \times 10^{-12}$
We simplify to put the number in scientific notation.
$\\=1.53 \times 10^{-12+1}
\\=1.53 \times 10^{-11}$
