What is the density of the solution?

Question

A glass vessel weighed 20.2376 g when empty and 20.3102 g when filled to an etched mark with water at 4°C. The same vessel was then dried and filled to the same mark with a solution at 4°C. The vessel was now found to weigh 20.3300 g. What is the density of the solution?

Answer 1

The water weighs 20.3102-20.2376=0.0726g.

The solution weighs 20.3300-20.2376=0.0924g.

The specific gravity is 0.0924/0.0726=1.2727. Given that the density of water at 4°C is 1g/cc, the density of the solution is 1.2727g/cc.