A particular flask has a mass of 17.4916 g when empty.When filled with ordinary water at 20.0°C (density = 0.9982 g/mL), the mass of the flask is now 43.9616 g.The density of so-called "heavy water" at 20.0°C is 1.1053 g/mL.What will the mass of the flask be when filled with heavy water at 20.0°C?
A)29.2573 g
B)46.8016 g
C)46.7489 g
D)29.3100 g
E)43.9140 g

Question

Quizplus · Accepted Answer

The mass of the 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 = 26.52 mL. The mass of heavy water filling the same volume is 26.52 mL * 1.1053 g/mL = 29.3100 g. Therefore, the total mass of the flask filled with heavy water is 17.4916 g + 29.3100 g = 46.8016 g.

A Particular Flask Has a Mass of 17