Chemistry — Rate from Concentration–Time

\text{rate} = -\frac{d[\text{R}]}{dt} = \frac{d[\text{P}]}{dt}

\text{initial rate} = \text{tangent at } t = 0

\text{average rate} = \frac{\Delta[\text{P}]}{\Delta t}

\text{rate} = k[\text{A}]^n