Whats more dense A box of cereal or a can of soup?

A can of soup is mostly water, which is pretty dense. A box of cereal is mostly air (I'm thinking rice crispies or corn pops), which is far less dense than water. But what you should do to prove it is get a box of cereal and measure its dimensions. Multiply the dimensions -- length, width, and height -- to determine its volume. Divide the box's net weight by the volume to determine its weight density. Then get a box or can of College Inn chicken broth. (For some reason, College Inn chicken broth is packaged by net weight instead of by volume in fluid ounces.) Divide the net weight by the package's volume to determine its weight density. Then compare the two.