(Solved): Pipet \( \left(4.0 \times 10^{\wedge} 0\right) \mathrm{mL} \) of a sample solution into a \( 250.0 ...

Pipet \( \left(4.0 \times 10^{\wedge} 0\right) \mathrm{mL} \) of a sample solution into a \( 250.00 \mathrm{~mL} \) volumetric flask and dilute to the mark with distilled water. Then, pipet \( 2 \mathrm{~mL} \) of this diluted solution into a \( 50.00 \mathrm{~mL} \) volumetric flask and dilute to the mark with distilled water. What is the dilution factor of the final solution? (Note: keep one decimal in your answer.) Note: Your answer is assumed to be reduced to the highest power possible. \( \times 10 \) Question 4 (1 point) In the Spectrophotometric determination of Iron experiment, the calibration curve is plotted as absorbance vs. concentration (unit: \( \mathrm{mol} / \mathrm{L} \) ). The curve is a straight line written as \( y=\left(9.0000 \times 10^{\wedge} 0\right) \times-0.0235 \). The path length of the cuvette used in the lab is \( 1.0 \mathrm{~cm} \). What is the molar extinction coefficient of the tris(phenanthroline) iron(II) in \( \mathrm{L} /\left(\mathrm{mol}^{*} \mathrm{~cm}\right) \) ? \( { }^{*} \) Provide your answer with 5 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: \[ \times 10 \] Answer