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Scheme $1$ and $2$ describe the conversion of $P$ to $Q$ and $R$ to $S$, respectively. Scheme $3$ describes the synthesis of $T$ from $Q$ and $S$. The total number of $Br$ atoms in a molecule of $T$ is. . . . . . . .
$9.3 \mathrm{~g}$ of aniline is subjected to reaction with excess of acetic anhydride to prepare acetanilide. The mass of acetanilide produced if the reaction is _________$100 \%$ completed is $\times 10^{-1} \mathrm{~g}$. (Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{~N}: 14, \mathrm{O}: 16, \mathrm{C}$ : $12, \mathrm{H}: 1)$