The density lead is 11.3 g/mL. What is the mass of 45 mL of the of metal?
For a sample of a substance, the relationship between the mass of the sample and the volume it occupies is given by the density of the substance.
The density of a substance tells you the mass of exactly one unit of volume. In your case, the density of lead is given in
A density of
You know that your sample occupies
#45 color(red)(cancel(color(black)("mL"))) * color(white)(overbrace(color(black)("11.3 g"/(1color(red)(cancel(color(black)("mL"))))))^(color(blue)("the density of lead"))) = color(green)(|bar(ul(color(white)(a/a)color(black)("510 g")color(white)(a/a)|)))#
The answer is rounded to two sig figs.