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6 July, 21:27

A package of aluminum foil is 59.3 yd long, 13 in. wide, and 0.00040 in. thick. If aluminum has a density of 2.70 g/cm3, what is the mass, in grams, of the foil?

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  1. 7 July, 00:58
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    493.02 g.

    Explanation:

    Density = mass/volume

    mass = density*volume

    m = D*V ... Equation 1

    m = mass of the aluminum foil, D = Density of the aluminum foil, V = volume of the aluminum foil.

    V = L*W*H ... Equation 2

    Where L = length of the aluminum foil, W = wide of the aluminum foil, H = thickness of the aluminum foil.

    Given: L = 59.3 yd = 59.3*0.9144 m = 54.224 m, W = 13 in = 13*0.0254 m = 0.3302 m, H = 0.00040 in = 0.00040*0.0254 m = 0.0000102 m.

    Substituting into equation 2

    V = 54.224*0.3302*0.0000102

    V = 0.0001826 m³ = (0.0001826*1000000) cm³

    V = 182.6 cm³

    Also given D = 2.70 g/cm³

    Substitute into equation 1

    m = 2.7*182.6

    m = 493.02 g.

    The mass in grams of the foil = 493.02 g.
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