Hello!
To find the density of mercury, divide the mass by the volume (written as: d = m/V).
Since we are given the volume, 649 mL, and the mass, 332 grams, we can find the density.
d = 332 grams / 649 mL
d ≈ 0.51155
Therefore, the density of mercury is equal to about 0.51 grams per milliliter.