Consider a reaction in which ...
An element or compound reacts with oxygen gas to produce oxides of
the elements found in the reactant.
This reaction can be categorized as a
reaction.

it's all four options.

56 moles of   lieter in chemistry

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