Question
Asked Sep 2, 2019
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A sheet of aluminum (Al) foil has a total area of 1.000 ft2 and a mass of 3.946 g.
 
What is the thickness of the foil in millimeters (density of Al = 2.699 g/cm3)?

provide answer in mm

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Expert Answer

Step 1

The conversion factor for ft2 and cm2 units is:

1.0 ft2 = 929.03 cm2

 

Hence, the area of aluminium foil in cm2 units is 929.03 cm2.

Step 2

The formula for calculating thickness of aluminium foil is given in the equation (1).

 

The thickness of given aluminium foil is calculated in cm units in the equation (2).

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Mass of Al Thickness of Al =- (1) Area of Alx density of Al 3.946 g Thickness of Al = 929.03 cm2 x 2.699 g/cm (2) =1.57x 10 cm

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Step 3

The conversion factor for centimeter and millimetre units is:

1 cm = 10 mm

 

Hence, 1.57 × 10-3 cm = 1.57 × 10-3 × 10 mm

            ...

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