Answered: Calculations are based off of my data…

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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Calculations are based off of my data table. I'm not sure how to answer the questions.

1.Based on the results of your experiment, do you have hard or soft water? Does this match the data for your area? Briefly explain your answer.

2.How much calcium would you ingest by drinking one 8 oz glass of your tap water? Show all calculations.

3.What percentage of the recommended daily dose of calcium (1,150 mg/day) does 1.0 L of your water provide? Show all calculations.

4. A complexometric titration can also be used to determine the amount of calcium in milk. The calcium concentration in milk is typically 1,200 mg/L. How would you alter the procedure used in this experiment to determine milk’s calcium content?

Table 1: Complexometric Titration of Hard Water
Include correct units
Hard Water Trial 1
Hard Water Trial 2
Hard Water Trial 3
Initial Syringe
Reading
1mL
0.8mL
0.5mL
Final Syringe
Reading
0.8mL
0.67mL
0.3mL
Volume of
EDTA
0.2mL
0.13mL
0.2mL
Consumed
Water
Hardness
40.04 ppm CaCO3
26.03 ppm CaCO3
40.04 ppm CaCO3
ppm CaCOз
Average
ppm
35.37 ppm CaCO3

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