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Dr. Farah M. Al-Duweesh 1. Identify and explicitly explain the purpose, year of formation and goal of each act formed by the EPA to the environment. Include your sources for your answer. Safe Drinking Water Act Pollution Prevention Act Clean Air Act Clean Water Act Water Pollution Control Act Food Quality Protection Act Use legitimate sources (books, journals or federal websites.gov/.org), plagiarism is highly degraded. 2. Assume as a quality control check, a sample of acetone is taken from a process to determine the concentration of suspended particulate matter. An 900-mL sample was placed in a beaker and evaporated. The remaining suspended solids were determined to have a mass of 0.025 gm. The specific gravity of acetone is 0.79 gm/cm³. (a) Determine the concentration of the sample as mg/L. (b) Determine the concentration of the sample as ppm. 3. How long will it take the carbon monoxide (CO) concentration in a room to decrease by 90 percent after the source of carbon monoxide is removed and the windows are opened? Assume the first-order rate constant for CO removal (due to dilution by incoming clean air) is 1.5/hr. No chemical reaction is occurring. Determine the Importance of Insulation in Minimizing Heat Loss through a Building 4. Determine the heat loss through an insulated and uninsulated wall. Each wall contains the following materials, which have the R factors given the following table: Component of Wall 1 in. stucco on outside of wall 1/2 in. sheathing under stucco 1/2 in. drywall on inside of wall Inside air film along inside of wall Outside air film along outside of wall R Factor 0.2 1.32 0.45 0.68 0.17 The 3.5in air space in the uninsulated wall has an R factor of 1.01. If 3.5in fiberglass insulation is placed in this space, it will have an R factor of 11.0.

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