What is the combined volume when 10 cm3 of acetone are added to 10 cm3 of distilled water?

Who knows? It's more than likely that the two solutions are not additive so the answer isn't 20 cc. If you know the density of the final solution, we can help.

The combined volume would be 19ml

To find the combined volume when 10 cm3 of acetone is added to 10 cm3 of distilled water, you simply add the volumes of the two substances together.

Acetone + Distilled Water = Combined Volume

Given that the volume of acetone is 10 cm3 and the volume of distilled water is also 10 cm3, you can add them together to get the combined volume:

10 cm3 + 10 cm3 = 20 cm3

Therefore, the combined volume when 10 cm3 of acetone is added to 10 cm3 of distilled water is 20 cm3.