Based on the provided reference, a specific sodium sulfate solution has a density of 1.19 g/ml.
The provided context specifies that 782 ml of a sodium sulfate solution has a density of 1.19 g/ml and contains 34.8% sulfate by mass. Therefore, the density of that particular sodium sulfate solution is 1.19 g/ml. It is crucial to understand that the density of a sodium sulfate solution can vary depending on its concentration. Higher concentrations of sodium sulfate will typically result in higher densities.
Therefore, without further information about the concentration, we can only provide the density of the specific solution mentioned in the reference.