Because the numbers of aluminum and oxygen atoms are not the same on both sides of the equation, so the equation is not balanced. In order to be balanced, the numbers of atoms of each element must be the same on both sides of the equation. The correct equation is 4Al + 3O2 --> 2Al2O3. This gives 4 aluminum atoms and 6 oxygen atoms on both sides of the equation, so it is balanced.
Unbalanced CH4 + O2 = H2O + CO2 Balanced CH4 + 2O2 = 2H20 + CO2
The combustion of methane can be balanced in the following manner. One molecule of CH4 plus two molecules of O2 produces one molecule of CO2 plus one molecule of H2O.
The equation c) 2H2 (g) + O2 (g) → 2H2O (g) is an example of a thermochemical equation because it shows the reactants and products with energy change included, but it doesn't explicitly mention the heat added or released during the reaction.
NH4NO3 (aq) N2O (g) + 2H2O (l)
I assume you were looking to balance the reaction: CH4 + 2O2 --> CO2 +2H2O
The molecular equation for the combustion of methane gas (CH4) in the presence of oxygen (O2) is: CH4 + 2O2 -> CO2 + 2H2O.
CH4 + 2O2 --> CO2 + 2H2O
2O2 in a chemical reaction equation means that there are two moles of O2, or oxygen, molecules.
CH4 + 2O2 → CO2 + 2H2O.
ch4 + 2o2 → co2 + 2h2o
ch4 + 2o2 → co2 + 2h2o
The balanced equation is 4LiNO3(s) -> 4LiNO2(s) + 2O2(g). Therefore, the coefficient of oxygen gas (O2) is 2.
Unbalanced CH4 + O2 = H2O + CO2 Balanced CH4 + 2O2 = 2H20 + CO2
The balanced chemical equation for the reaction CH4 + 2O2 → CO2 + 2H2O shows that 1 molecule of CH4 reacts with 2 molecules of O2 to produce 1 molecule of CO2 and 2 molecules of H2O. This equation ensures that the number of atoms of each element is the same on both sides of the reaction arrow.
CH4(g) + 2O2(g) CO2(g) + 2H2O(g) + 802 kJ/mol
The balanced chemical equation for the combustion of methane (CH4) is: CH4 + 2O2 -> CO2 + 2H2O. This equation obeys the law of conservation of matter by showing that the number of each type of atom is the same on both the reactant and product sides.
The symbol equation for the formation of sodium oxide is: 2Na + 1/2O2 -> Na2O.