Question

The rate law for a hypothetical reaction is rate=k[A][B]. If the concentration of A and B are both 0.020 miles per liter and k = 1.3x10-1M-1s-1, what is the reaction rate

Answer 1

rate = 1.3×10⁻¹×0.02×0.02 = 5.2×10⁻⁵ mole-L⁻¹-s⁻¹

Answer 2

What you got here looks to be a plug-and-chug question
Note that mol/L = M

you know that

rate= k[a][b]

rate=?
k=1.3*10^-1 1/Ms
a=0.020 M
b=0.020 M

rate= (1.3*10^-1)(0.020)(0.020)= -->the units cancel out to give you M/s

rate= 0.000052 M/s