Answer
True
Work Step by Step
The amount of chemical $A(t)$ in a tank at time $t$ is given by:
$c(t)=\frac{A(t)}{V(t)}=\frac{amount -of -chemical}{total-volume-of-solution}$
$\rightarrow A(t)=c(t).V(t)$
Thus, the statement is true.
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