Answer: The mass of the gold nugget is 386 g.
Step-by-step explanation:
It is known that density of a substance is its mass divided by its volume.
Mathematically, Density =

It is given that volume is 20
and density is 19.3
. Therefore, calculate mass of given gold nugget as follows.
Density =

19.3
=
mass = 386 g
Thus, we can conclude that the mass of the gold nugget is 386 g.