Which compound is shown in the illustration?

a hydrocarbon

Explanation:

1. Functional group is a specific group of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.

2. A halogen is the name of group 17 elements containing fluorine, chlorine, bromine, iodine and astatine.

3. A hydrocarbon is a compound containing carbon and hydrogen. Example: alkanes, alkenes and alkynes.

Propane is an alkane with molecular formula .

4. An ester is a functional group .

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