# Density - above The mass of lead is given at 305.0 g...

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Density Density is a derived quantity and has the dimensions of mass/length 3 , and is defined as the  mass per unit volume. density = mass/volume The S.I. units for density are kg/m 3 , but these are not very convenient units for everyday use.  More common units are g/cm 3  for solids g/ml for liquids  g/L for gases If we know the mass and volume of a sample, then we can calculate its density. A cube of lead 3.00 cm on a side has a mass of 305.0 g. What is the density of lead? To answer this question we need to put the mass and volume of the sample into the equation
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Unformatted text preview: above. The mass of lead is given at 305.0 g. Although we are not given the volume directly, we do know that the sample is a cube (i.e., all sides of equal length), and that length of a side is 3.00 cm . The volume of this cube would be Volume = ( 3.00 cm) 3 = 27.0 cm 3 . Thus, the density of the cube of lead is density = mass/volume = 305.0 g / 27.0 cm 3 = 11.3 g/cm 3 . Notice that the density is the same no matter the size or shape of the sample....
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