Zirconium (Zr) has an average atomic mass of 91.22 amu and is made up of the isotopes Z90r, Z91r, Z92r, Z94r, and Z96r. The atom of which isotope has the greatest mass

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

answerto predict;