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A package of aluminum foil contains 50. Ft2 of foil, which weighs approximately 7.0 oz . Aluminum has a density of 2.70 g/cm3. What is the approximate thickness of the foil in millimeters?

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We know density = Mass / Volume

So Volume = Mass/Density

Volume =  Area * Thickness

[tex]Area = 50 ft^2 = 4.645152 m^2\\ \\Mass = 7 oz = 0.198447 kg\\ \\Density = 2.70 g/cm^3 = 2700 kg/m^3\\ \\Substituting \\ \\4.645152 *t = \frac{0.198447}{2700} \\ \\t = 1.58*10^{-5}m = 1.58*10^{-2}mm[/tex]

So the approximate thickness of the foil in millimeters = [tex]1.58*10^{-2}mm[/tex]

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