Question

please help with question 1 and 3 part c

Name: 8 9 Lab Section: 7 Pre-lab: The Concentration of Riboflavin 1. The given absorbance spectrum is recorded for a dye. Which is the most likely color of this dye? a. Blue-green b. Colorless c. Red d. Black M stock solution is diluted to 10.00 ml, what is the final 2. IF 4.00 ml of a 5.00 X 10 concentration? 3. The absorbance of known concentrations of blue food dye were measured to generate the following calibration curve. Absorbance vs. Concentration for Blue Food Dye a. Annotate the graph with the labels and units on the x and y axes. Also add an appropriate title. b. Imagine a blue food dye solution of unknown concentration was found to have an absorbance of 0.310. Using the calibration curve, estimate the concentration of the 20150 unknown dye solution. 4,00×10 M Concentration (M) c. Calculate the slope and y-intercept (including units) for the line of best fit. Show your work. slope: y-intercept:

Answer 1

The answer is as follows :

The absoobance is at L00 - 650 em the absorbed colouro is orange. So, Ve colom ot dje wil be eafeer orange. Su, lhe elour range he Complamentary eolour will be Blue- green, From 1 gmoph, it is skown tha, Along anis ALong २x।06(M) each SnaI box = C.02 (O.02x 2) c0.04 Ihe yimter cept i : BXO.02 10000 (M) Sope x axLo-