The fictitious compound, arrhenium fluoride (AhF), reacts with itself to form a dimer with the formula Ah2F2. The reaction is second order in AhF. The value of the rate constant is 4.091×10−3 M−1s−1. What is the initial rate of reaction in a reactor filled with AhF to a concentration of 6.5 M? Express your answer in M⋅s−1.

Noted.

0.17284

I think it is wrong

it is wrong

Rate Constant * Concentration^2

I got it right for 0.17284

Do the work yourself, rather than trying to cheat.