How does the law of conservation of mass apply to this reaction:
C₂H₂ + 30₂ → 2H₂O + 2C0₂?

. The law of conservation of mass has already been applied. There is an equal number of each element on both sides of the equation.

. Each element needs to be balanced.

. Only the oxygen needs to be balanced. There are equal numbers of hydrogen and carbon.

. The equation needs to be balanced. There are fewer oxygen atoms in the equation than hydrogen or carbon.

20 Points!​