An empty flask's mass is 17.4916 g,and its mass is 43.9616 g when filled with water at 20.0°C (density = 0.9982 g/mL).The density of "heavy water" at 20.0°C is 1.1053 g/mL.What is the mass of the flask when filled with heavy water at 20.0°C?

Question

Quizplus · Accepted Answer

The mass of water in the flask is 43.9616 g - 17.4916 g = 26.47 g. The volume of the flask is 26.47 g / 0.9982 g/mL = 26.518 mL. The mass of heavy water is 26.518 mL * 1.1053 g/mL = 29.3100 g. The total mass is 17.4916 g + 29.3100 g = 46.8016 g.

An Empty Flask's Mass Is 17