Answer
$\left[\begin{array}{lllllll}
after & 0s & 10s & 20s & 30s & 40s & 50s & \\
quantity= & 16g & 8g & 4g & 2g & 1g & 0.5g
\end{array}\right]$
Work Step by Step
The quantity halves every 10 seconds as follows:
$\left[\begin{array}{lllllll}
after & 0s & 10s & 20s & 30s & 40s & 50s & \\
quantity= & 16g & 8g & 4g & 2g & 1g & 0.5g
\end{array}\right]$