ing an experiment to test water from various sources for the presence of lead (a heavy metal that can harm humans if ingested). The student will collect water samples from the school drinking fountain, home kitchen tap, and a nearby river. To test for lead, the student will use a solution of iodide ion. The student obtains some distilled water (known not to contain lead) and adds the iodide ion; the water remains clear. Next the student obtains a solution known to contain lead from the chemistry laboratory; when iodide ion is added to this sample, a bright yellow solid forms
ing an experiment to test water from various sources for the presence of lead (a heavy metal that can harm humans if ingested). The student will collect water samples from the school drinking fountain, home kitchen tap, and a nearby river. To test for lead, the student will use a solution of iodide ion. The student obtains some distilled water (known not to contain lead) and adds the iodide ion; the water remains clear. Next the student obtains a solution known to contain lead from the chemistry laboratory; when iodide ion is added to this sample, a bright yellow solid forms
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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A student is designing an experiment to test water from various sources for the presence of lead (a heavy metal that can harm humans if ingested). The student will collect water samples from the school drinking fountain, home kitchen tap, and a nearby river. To test for lead, the student will use a solution of iodide ion. The student obtains some distilled water (known not to contain lead) and adds the iodide ion; the water remains clear. Next the student obtains a solution known to contain lead from the chemistry laboratory; when iodide ion is added to this sample, a bright yellow solid forms.
Transcribed Image Text:Referring to the same experiment
above, the independent variable is...
O distilled water
O iodide ion
O water samples
O solution containing lead
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