A 2. 950×10−2 m solution of glycerol ( c3h8o3 ) in water is at 20. 0 ∘c. The sample was created by dissolving a sample of c3h8o3 in water and then bringing the volume up to 1. 000 l. It was determined that the volume of water needed to do this was 998. 7 ml. The density of water at 20. 0 ∘c is 0. 9982 g/ml.