Question

The mass of an empty flsk is 49.74 g. what is the mass of the flask filled with acetone ( d = 0.792 g/mL) if the same flask weighs 75.2 g. when filled with water?

Answer 1

mass flask + H2O = 75.2g
mass empty flask = -49.74
----------------------------
.........mass H2O = ??
density H2O = 1.00g/mL, solve for volume water. volume H2O =mass H2O/density H2O.

Then mass acetone = volume acetone (volume of H2O that is) x density acetone.
Add mass acetone to mass empty flask.

Answer 2

69.9