Pre-Lab Questions

1. How will you determine which salt is the contaminant? Which previous lab has

the most relevant information for helping you?

2. How will you determine the concentration of the salt in the water? Which

previous lab has the most relevant information for helping you prepare?

3. How will you determine the hazard level of the contaminant? Which previous

lab has the most relevant information for helping you prepare?

4. Recap the safety consideration from each of the previous labs. Summarize the

safety information from those labs here.

Post-Lab Questions

1. What is the contaminant in the water supply? Provide the evidence you have

for your determination and the logic for making your determination and ruling

out the other possibilities.

2. What is the concentration of the contaminant in the water supply? Report this

value in two units (molarity and grams per liter).

3. What is the relative average deviation for the concentration?

4. How hazardous is the contamination? Cite outside resources you find. You

should consider the identity and concentration of the contaminant when

making this determination. Make sure to consider units when comparing your

data with outside resources.

5. Based on your information, what is your recommendation for what the town

should do now with the information you found. Make sure your

recommendation is based on your evidence.

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