Ablock of aluminum occupies a volume of 15.0 ml and weighs 40.5 gallons what is the density

Hello!

I'm going to have to infer that you meant "grams" and not "gallons" :-)

Anyways, to find the density, you need to the divide mass over volume (d = m/V).

Since we are given the volume being 15.0 mL, and the weight being 40.5 grams, we can find the density of the aluminum block.

40.5 grams / 15.0 mL = 2.7 g/mL

Therefore, the density of the aluminum block is 2.7 grams per milliliter.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.