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Show transcribed image text Chemistry lab report questions EXPERIMENT 7b POLISHING AND ETCHING STEEL 1. Why must the sample be polished to such a mirror finish if one wishes to set the grains? 2. What is the function of an etchant? 3. Will one etchant work.
Unformatted text preview: CHEM 1212K Student Notes, Experiment 20 Freshman Chemistry Program Fall 2015 Experiment 20: pH Titration ... in a cola sample if the initial pH is 3.1 and the initial concentration of the acid is 0.01 M. (4 pts) Lab Report Rubric.
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