**Preparation and Analysis of a Compound Solution**An unknown amount of a compound with a molecular mass of 270.57 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 355 nm is 0.495 in a 1.000 cm cuvette. The molar absorptivity for this compound at 355 nm is \( \varepsilon_{355} = 6149 \, \text{M}^{-1}\text{cm}^{-1} \).### Questions1. **What is the concentration of the compound in the cuvette?** - Concentration: \_\_\_\_\_\_\_\_ M2. **What is the concentration of the compound in the 10 mL flask?** - Concentration: \_\_\_\_\_\_\_\_ M3. **How many milligrams of compound were used to make the 10 mL solution?** - Mass: \_\_\_\_\_\_\_\_ mg **Instructions for Solving:**To solve these questions, apply the Beer-Lambert Law:\[ A = \varepsilon \cdot c \cdot l \]Where:- \( A \) is the absorbance (0.495),- \( \varepsilon \) is the molar absorptivity (\(6149 \, \text{M}^{-1}\text{cm}^{-1}\)),- \( c \) is the concentration in the cuvette in M,- \( l \) is the path length of the cuvette (1.000 cm).Calculate the concentration in the cuvette first, then use dilution principles to find the original concentration and mass in the 10 mL flask.

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An unknown amount of a compound with a molecular mass of 270.57 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 355 nm is 0.495 in a 1.000 cm cuvette. The molar absorptivity for this compound at 355 nm is €355 = 6149 M-¹cm-¹. What is the concentration of the compound in the cuvette? concentration: What is the concentration of the compound in the 10 ml flask? concentration: How many milligrams of compound were used to make the 10 mL solution? mass: M M mg

An unknown amount of a compound with a molecular mass of 270.57 g/mol is dissolved in a 10 mL volumetric flask. A 1.00 mL aliquot of this solution is transferred to a 25 mL volumetric flask, and enough water is added to dilute to the mark. The absorbance of this diluted solution at 355 nm is 0.495 in a 1.000 cm cuvette. The molar absorptivity for this compound at 355 nm is €355 = 6149 M-¹cm-¹. What is the concentration of the compound in the cuvette? concentration: What is the concentration of the compound in the 10 ml flask? concentration: How many milligrams of compound were used to make the 10 mL solution? mass: M M mg

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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