What is the number of electrons passed through an electrolyte solution when 1 ampere current is passed for 16.1 minutes?

Identify reactant (A) used in the following conversion.

Chlorobenzene $$+\mathrm{A} \underset{\mathrm{AlCl}_3}{\stackrel{\text { anhydrous }}{\longrightarrow}} 1-$$ Chloroacetophenone $$+4 -$$ Chloroacetophenone

$$2 \sin \left(\theta+\frac{\pi}{3}\right)=\cos \left(\theta-\frac{\pi}{6}\right)$$, then $$\tan \theta=$$

$$\int[1+2 \tan x(\tan x+\sec x)]^{\frac{1}{2}} d x= $$