write a balanced equation for the combustion of propane, C3H8?

Answer 1

C(3)H(8)+5O(2)=>3CO(2)+4H(2)O

fuel+oxygen=>carbon dioxide +water

(combustion (the rapid oxidation of a substance giving out energy in the forms of light and heat) is burning, which needs O2!. The fuel reacts with oxygen )

brackets-subscript

Answer 2

combustion means burning which means reacting with oxygen

oxygen in the air is diatomic oxygen, O2

when we burn hydrocarbons (like propane), we make CO2 and water

so, C3H8 + O2 => CO2 + H2O

now you just have to balance it

three carbons on the left, need three on the right
eight hydrogens on left, need eight on right

C3H8 + O2 => 3 CO2 + 4 H2O

the carbons and hydrogens balance so now we just have to make oxygen work out.... their are 3*2 + 4 = 10 oxygens on right, so..

C3H8 + 5O2 => 3 CO2 + 4 H2O

voila

Answer 3

C3H8 + 5O2 -> 3CO2 + 4H2O