Question #3aee6

1 Answer
Mar 28, 2016

Answer:

#"60.1 g"#

Explanation:

You can think about a substance's density as being a conversion factor between mass and volume.

More specifically, a substance's density will tell the mass of that substance that occupies one unit of volume.

In this case, 1,3-cycloheptadiene is said to have a density of #"0.868 g mL"^(-1)#. The volume is expressed in milliliters, which means that one unit of volume would correspond to #"1 mL"#.

So, you know that every #"1 mL"# of 1,3-cycloheptadiene has a mass of #"0.868 g"#, which means that #"69.2 mL"# will have a mass of

#69.2 color(red)(cancel(color(black)("mL"))) * overbrace("0.868 g"/(1color(red)(cancel(color(black)("mL")))))^(color(purple)("density")) = color(green)(|bar(ul(color(white)(a/a)"60.1 g"color(white)(a/a)|))) -># rounded to three sig figs.