Answered: For the following questions (Q1-Q5),…

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter4: Types Of Chemical Reactions And Solution Stoichiometry

Section: Chapter Questions

Problem 4RQ: Molarity is a conversion factor relating moles of solute in solution to the volume of the solution....

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Question

For the following questions (Q1-Q5), consider the compound tartrazine (Yellow 5 food dye) that has a chemical formula of C₁₆H₉N₄Na₃O₉S₂. Ana weighs out 0.1328 g of tartrazine powder on the balance for her experiment and makes a stock solution by dissolving her powder in 500.0 mL of solution.

Q1. Determine the number of moles of tartrazine that Ana weighed out.

answer for (Q1)= 2.487 x 10^-4 moles of tartrazine

*****need Q2 answered*******

Q2. Find the molarity (mol/L) of Ana’s tartrazine solution.

Concentration (µM or µmol/L)	Absorbance
0.00	0.001
9.94	0.252
19.9	0.506
29.8	0.738
39.8	1.018

slope (m): 0.02534 1/(µM)

y-intercept (b): -0.0009147

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