Step 1: Write the reaction
Aniline reacts with acetic anhydride to form acetanilide.
The mole ratio of aniline to acetanilide is 1 : 1.
Step 2: Calculate moles of aniline
Molar mass of aniline (C₆H₅NH₂) = 93 g mol⁻¹
Moles of aniline = 6.55 / 93 = 0.0704 mol
Step 3: Calculate mass of acetanilide formed
Molar mass of acetanilide = 135 g mol⁻¹
Mass = 0.0704 × 135 = 9.5 g
Step 4: Express in required form
9.5 g = 95 × 10⁻¹ g
Final Answer: 95