What element should be use to balance an equation with the 2 end product is carbon dioxide an water an a compound containing 3 atoms an 8 atoms of hydrogen?

Answer 1

The element used is Carbon and the compound thus formed is propane. By burning propane in excess of air, the end products are carbon dioxide and water. The balanced chemical equation for the above reaction is :

C3H8 + 5O2 -------> 3CO2 + 4H2O

Answer 2

Balance off your carbons first.

C3H8 + O2 --> CO2 + H2O (skeleton)

C3H8 + 5O2 --> 3CO2 + 4H2O

(Odd number alkanes are a cinch)

Answer 3

The only unspecified element is the oxygen, of which you will need 6 atoms for the carbon and 4 for the hydrogen.

End products are CO2 and H2O

Answer 4

Combining atoms of carbon, hydrogen and oxygen gives a plethora of compounds that are all organic.

Answer 5

C3H8 + 5 O2 (arrow) 3 CO2 + 4 H2O

Answer 6

hydrogen