Of the objects below, is the most dense. of the objects below, is the most dense. an object with a volume of 3.91 × 10-24 nm3 and a mass of 7.93 × 10-1 ng an object with a volume of 139 ml and a mass of 93 g an object with a volume of 2.5 l and a mass of 12.5 kg an object with a volume of 0.00212 m3 and a mass of 4.22 × 104 mg an object with a volume of 13 dm3 and a mass of 1.29 × 103 g