Chemistry

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What is the mass of a cylinder of lead that is 2.50 cm in diameter and 5.50 cm long. The density of lead is 11.4 g/mL. Find the volume of the cylinder.

  • Chemistry -

    Recall that density of a material can be solved by
    d = m/V
    where:
    m = mass of material
    V = volume of material
    Note that the volume of a cylinder is given by
    V = pi*(r^2)*h
    where:
    r = radius (which is 1/2 of the diameter)
    h = height
    Substituting,
    V = 3.14*[(2.50/2)^2]*5.50
    V = 26.98 cm^3

    d = m/V
    Note that mL is equivalent to cm^3. Thus
    11.4 = m/26.98
    m = 11.4*26.98
    m = 307.57 g

    Hope this helps~ :)

  • Chemistry -

    307.57 g

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