Having obtained the voume of the flask, she emptied the flask, dried it and filled it with an unknown whose density she wished to determine. The mass of the stoppered flask when completely filled with liquid was 56.796g. Find the density of the liquid.

Answer 1

hard to say, unless we know the volume of the flask and the mass of the empty flask.

The density of the liquid is probably a lot less if it's in a 2000ml, 50g flask than if it fills a 50ml, 13g flask.