question 3\nin a straight - line plot of a zero - order integrated rate law equation, the y - intercept…

Brief Explanations:

The zero - order integrated rate law is given by $[A]=[A]_0−kt$, where $[A]$ is the concentration of the reactant at time $t$, $[A]_0$ is the initial concentration of the reactant, $k$ is the rate constant, and $t$ is time. When we plot $[A]$ (y - axis) against $t$ (x - axis), this is a linear equation of the form $y = mx + c$, where $m=-k$ (slope) and $c = [A]_0$ (y - intercept). So the y - intercept denotes the initial reactant concentration.

Answer:

Initial reactant concentration