To find the volume of acetone with a mass of 28.1 g, we can use the formula for density, which is:

Density = Mass / Volume

We can rearrange this formula to solve for volume:

Volume = Mass / Density

Given that the density of acetone is 0.7899 g/ml and the mass is 28.1 g, we can plug these values into the equation:

Volume = 28.1 g / 0.7899 g/ml

Calculating this gives us:

Volume ≈ 35.6 ml

So, the volume of acetone that has a mass of 28.1 g is approximately 35.6 ml.