(Solved): A pycnometer is a glass flask with a tight fitting glass stopper that is used to obtain the volume ...

A pycnometer is a glass flask with a tight fitting glass stopper that is used to obtain the volume of a liquid with high accuracy. A pycnometer has a mass of $$25.151$$ grams when empty, and a mass of $$42.481$$ grams when completely filled with water. The pycnometer has a mass of $$49.629$$ when completely filled with an unknown liquid. What is the density in $$\mathrm{g}/{\mathrm{cm}}^3$$ of the unknown liquid? Assume the density of water is $$1.000\mathrm{g}/{\mathrm{cm}}^3$$.