Which phase(s) would experience a decrease in the rate of dissolution with agaitation ?
a. gases only
b. solids
c. liquids only
d. both gases and liquids

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

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