Answer:
The answer is A. 18.2 g/mL
Explanation:
The density of a compound, substance or solid is express as the ratio between the mass and the volume of itself. So, in this case we can obtain the density since the division between 100 g (mass) and 5.49 mL (volume).
Density (ρ) = 100g/5.49mL = 18.2 g/mL