"Carbon" is an element. It is found in the fourth group of the periodic table, and it is a stable element. This means that it can not be decomposed via heating, because if an element were to break down, it would release its subatomic particles. The explanation was probably one used to describe the thermal decomposition of a compound into smaller compounds.
I believe it would be CS and GE (option 3). i hope i helped ya out.
Cheeze is the most one i hope it helps
8.9 g/cm3 since density equals mass/volume or m/v you just divide 89 by 10 to get 8.9
