A balanced equation is that equation which obeys the law of conservation of mass.
(Added: also the law of conservation of (the kind of) elements should be obeyed).
In such an equation the number of atoms for each elementin the reaction and the net or overall charge is same for the reactants and products.
Yes, chemical equations must be balanced due to the law of conservation of matter/mass.
Mole Ratios
Both balanced and unbalanced chemical equations represent the chemical reactions that take place between reactants to form products. The key difference is that balanced equations have an equal number of atoms of each element on both sides, while unbalanced equations do not.
Conservation of mass.
2na+s-2nas
all equations balance as the theory of conservation of mass states that no mass should be lost, so all equations should balance
Properly balanced equations are necessary in chemistry to accurately represent the conservation of mass and atoms in a chemical reaction. Balanced equations ensure that all reactants are accounted for and that the number of atoms remain the same on both sides of the reaction.
the law of conservation of mass.
They are necessary for accurate chemical calculations.
Stoichiomeric calculations
Chemical reactions can have many possible balanced equations because there are various ways in which the reactant molecules can combine to form different products. Each combination may result in a different balanced equation depending on the stoichiometry of the reaction. Additionally, different conditions, such as temperature and pressure, can also affect the outcome of the reaction, resulting in different balanced equations.
No - they are usually balanced by changing the numbers before the molecules.