If an object sinks in water it’s density is less than that of water true or false

False

Explanation:

If a objects density is less such as a battleship, it shall remain afloat. However objects which have a less density than 1 (which is the density of water) will indeed sink. This proves the statement as false.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3