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A square of aluminum foil measuring 3.20 inches on each side weighs 275 mg. The density of aluminum is 2.70 g/cm3. Find the thickness (in micrometers) of the foil.

  • Chemistry - ,

    Convert 3.20 inches to cm and square that to arrive at the area of the Al square.

    volume Al = mass/density.
    Solve for volume.
    Then volume = area x thickness.
    You know volume and area, solve for thickness and convert to micrometers.

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