how are elements identified in the flame test lab? Please explain using claim, evidence and reasoning to answer the question! thank you!

a:

by the combination of an unlimited number of elements

i think   the answer is c hope i'm right

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