A 2.50 gram rectangular object has measurements of 22.0 mm, 13.5 mm, and 12.5 mm. what is the object's density in units of g/ml?

G/mL is equivalent to g/cm^3, so we first convert the dimensions into cm:

2.20 cm, 1.35 cm, and 1.25 cm

Then the total volume is: V = lwh = 3.7125 cm^3

To get the density, we divide mass by volume: 2.50 g / 3.7125 cm^3 = 0.6734 g/cm^3 = 0.6734 g/mL