find slope using equation of the line

lele on Formatting unde C Alignme Clipboard XV Standard Numbe Sales Cats To AL Standard M N A Concentration LOOS 0 0.029 0.139 5 10 15 20 063 06 20 151 0418 0.56 7 Sale WD500 04 10 11 12 13 14 151 16 Absorbones > 01 0 DA et concentration /100ml 2. Please state whether Beer's law is observed in this case 3. From the absorbance of the "unknown" solution, determine the concentration of iron(II) in the dilute "unknown" solution and the original "unknown solution" in moles/L. Absorbance @508nm Concentration mg/100ml Standard 1 5 10 15 20 Sample Unknown 1/5 0.005 0.382 0.631 0.926 1.229 0.0279 0.139 0.279 0.418 0.568 0.151 Graph between the Absorbance against Concentration of Iron (mg/100cm) Graph between the Absorbance against Concentration of Iron (mg/100cm) 0.5 Y=0.45 0-0.0002 R! -0.3893 I 0.5 04 Absorbance 508nm 03 022 0 04 0 felt concentration marroom 1