Question

Question 12 Unsaved
Methane, CH4, burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reaction?
Question 12 options:

CH4 + 4O → 2H2O + CO2

CH4 + O → H2O + CO2

CH4 + 2O2 → 2H2O + CO2

CH4 + O2 → H2O + CO2

Answer 1

3rd equation is correct and balanced equation...
CH4+2O2------2H2O+CO2
as number of atoms of each element is equal in both sides LHS and RHS
and it also follows law of conservation of mass

Answer 2

HERE'S YOUR ANSWER....

When methane (CH4) is burned in oxygen it gives off heat and usually makes carbon dioxide and water.

The balanced equation is: CH4 + 2 O2 ---> CO2 + 2 H20 

If there is not enough oxygen sometimes it can also produce carbon monoxide (CO) instead of carbon dioxide.

hope this helps.