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Twelve dietary iron tablets were analyzed by the gravimetric procedure in Section 1-4

Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris ISBN: 9781429218153 475

Solution for problem 3-20 Chapter 3

Quantitative Chemical Analysis | 8th Edition

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Quantitative Chemical Analysis | 8th Edition | ISBN: 9781429218153 | Authors: Daniel C. Harris

Quantitative Chemical Analysis | 8th Edition

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Problem 3-20

Twelve dietary iron tablets were analyzed by the gravimetric procedure in Section 1-4 and the final mass of Fe2O3 (FM 159.688) was 0.2774 0.0018 g. Find the average mass of Fe per tablet. (Relative uncertainties in atomic masses are small compared with relative uncertainty in the mass of Fe2O3. Neglect uncertainties in atomic masses in this problem.)

Step-by-Step Solution:
Step 1 of 3

pH at Equilibrium Calculations • HNO2: Ka = 4.0 x 10^-4. You mix HNO2 in water to make a 1.0 M HNO2 solution. What is the pH at equilibrium HNO2(aq) + H2O(l) I 1.0 M C -x E 1 - x

Step 2 of 3

Chapter 3, Problem 3-20 is Solved
Step 3 of 3

Textbook: Quantitative Chemical Analysis
Edition: 8
Author: Daniel C. Harris
ISBN: 9781429218153

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Twelve dietary iron tablets were analyzed by the gravimetric procedure in Section 1-4