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2 June, 23:26

A package of aluminum foil contains 50. ft2 of foil, which weighs approximately 6.0 oz. Aluminum has a density of 2.70 g/cm3. What is the approximate thickness of the foil in millimeters? Express your answer to two significant figures and include the appropriate units.

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  1. 2 June, 23:36
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    1.36 x 10^-3 cm

    Explanation:

    Area = 50 ft^2 = 46451.5 cm^2

    mass = 6 oz = 170.097 g

    density = 2.70 g/cm^3

    Let t be the thickness of foil in cm.

    mass = volume x density

    mass = area x thickness x density

    170.097 = 46451.5 x t x 2.70

    t = 1.36 x 10^-3 cm

    Thus, the thickness of aluminium foil is 1.36 x 10^-3 cm.
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