Answer:
Hope this helps..
Step-by-step explanation:
H2- Molecule, H2, hydrogen, 2 atoms
CH4- Molecule, 1 C and 4 H's.., Methane and Natural Gas, 5 atoms
C6H12O6- Molecule, 6c 12h 6o..., hexose, 24 atoms
H2O-Molecule, 2h 1o, Water, 3 atoms
O2- Molecule, O2, Oxygen, 2 atoms??
CO2-Molecule, 1C 2O, Carbon dioxide, 3 atoms