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Iron has a density of 7.9 g/cm3. What is the mass of a cube of iron with the length of one side equal to 55.0 mm?
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Density = mass/volume We have density We can calculate the volume of a cube. Each side is 55.0 mm. Since our density is in g/cm^3, we need to calculate volume in cm^3. 1 mm = 0.1cm So 55.0 mm = 5.50cm And the volume of the cube is 5.50^3 cm^3 Plug in volume and density into the equation and solve for mass
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