Answer:
9.94 x 10^-6 M/s
Step-by-step explanation:
The rate law for the given reaction is:
Rate = k[O₂][H₂]²
where k is the rate constant, [O₂] is the concentration of O₂, and [H₂] is the concentration of H₂.
Using the given values, we can substitute them into the rate law and solve for the reaction rate:
Rate = (6.0 x 10^4 M²s^-1) x (0.055 M) x (0.015 M)²
Rate = 9.94 x 10^-6 M/s
Therefore, the reaction rate when [O₂] = 0.055 M and [H₂] = 0.015 M is 9.94 x 10^-6 M/s.