A particular flask has a mass of 17.4916 g when empty. When filled with ordinary water at 20.0^$\circ$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^$\circ$C is 1.1053 g/mL. What will the mass of the flask be when filled with heavy water at 20.0^$\circ$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

First, find the mass of the ordinary water by subtracting the mass of the empty flask from the mass of the flask filled with ordinary water: 43.9616 g - 17.4916 g = 26.47 g. This is the mass of the ordinary water. To find the volume of water, divide the mass by the density of ordinary water: 26.47 g / 0.9982 g/mL = 26.5 mL (approximately). To find the mass of the heavy water that would occupy the same volume, multiply the volume by the density of heavy water: 26.5 mL * 1.1053 g/mL = 29.31045 g. Finally, add the mass of the heavy water to the mass of the empty flask to find the total mass when filled with heavy water: 29.31045 g + 17.4916 g = 46.8016 g.

A Particular Flask Has a Mass of 17 ∘\circ∘ C (Density = 0

A Particular Flask Has a Mass of 17 $\circ$ C (Density = 0