For a zero-order reaction , the experimental initial rate is measured as when the concentration of i — Chemical Kinetics Chemistry Question

Question

For a zero-order reaction $A \rightarrow \text{Products}$, the experimental initial rate is measured as $1.2 \times 10^{-3} \text{ M s}^{-1}$ when the concentration of $A$ is $0.1 \text{ M}$. If the experiment is repeated with an initial concentration of $0.5 \text{ M}$, what is the specific rate constant $k$ in $\text{M s}^{-1}$? Express your answer as $Y \times 10^{-3}$ and provide the value of $Y$.