Check out the options.
Recall the characteristics of a compound.
The number of elements in the reactant and product side should be the same.
Divalent elements are those elements that have valency 2.
Recall the information provided by the chemical equation.
Recall the definition of the options.
Mass of the elements on both sides of the chemical equations should be equal.
Percent composition can be calculated by dividing the molecular mass by total molecular mass.
The valency of oxygen is 2. The overall charge on the nitrogen dioxide is 0.
Sodium bicarbonate is also known as Baking Soda
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