Answer:
1.108g/mol
Step-by-step explanation:
Here's how you solve it:
1. Find the change in volume: 240.0 mL - 209.8 mL = 30.2 mL
2. Calculate the mass of the displaced water: 30.2 mL * 1 g/mL (density of water) = 30.2 g
3. Calculate the volume of the metal: (240.0 mL - 209.8 mL) + 209.8 mL = 240.0 mL (the metal displaces all of the water in the graduated cylinder)
5. Calculate the density of the metal: (266.0 g) / (240.0 mL) = 1.108 g/mL
So there you go! The density of the metal is 1.108 g/mL.