A pycnometer is a device used to measure densities.You are in the lab and need to measure the density of an unknownsolid. The pycnometer is weighed empty and once again when it isfilled with methanol at 18°C (the density of methanol at 18°C is0.7914 g/mL). The following data is obtained:
      Mass of thepycnometer: 127.111 g
      Mass of thepycnometer and the methanol: 378.024 g
The pycnometer is emptied and 17.66 g of solid areplaced into it. It is then refilled with water at 18°C (density ofwater at 18°C = 0.99862 g/mL) and is found to have a mass of459.704 g. You are told the solid is one of thefollowing:
Copper: (d = 8.96 g/mL)
Gold: (d = 19.30 g/mL)
Silver (d = 10.50 g/mL)
What is the identity of the solid?
