Question

Looking for help with stoichiometry chemistry. I am trying to get from molecules to gallons. I have the density and the chemical formula. I would love to know how to set up the problem. thank you!

Answer 1

Let us take an example of benzene .

The atomic masses of C and H are 12 g/mol and 1 g/mol respectively.

The molar mass of benzene

Suppose we have a sample of benzene which contains molecules of benzene.

We can convert number of molecules into number of moles by using Avogadro's number.

Now we will use molar mass of benzene to convert number of moles into mass in grams

Density of benzene is 0.876 g/mL.

Now we will use density to convert mass of benzene into volume in mL

Now convert unit of volume from mL to L.

Now convert unit of volume from L to gallons