Learning about the parts of an atom is important because

c (diamond),

sio2 (quartz)

that's what i got you can count the number of atoms

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

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