Write balanced equations for each of the following reactions.
b. When copper(II) nitrate is heated strongly, it decomposes to form copper(II) oxide, nitrogen dioxide, and oxygen.
e. Potassium peroxide reacts with CO₂(g) to give potassium carbonate and O₂.

Balancing chemical equations involves ensuring that the number of atoms for each element is the same on both the reactant and product sides. This is based on the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. To balance an equation, coefficients are adjusted in front of the chemical formulas.

Chemical reactions can be classified into several types, including synthesis, decomposition, single replacement, and double replacement. The reaction between potassium peroxide and carbon dioxide is a type of synthesis reaction, where two or more reactants combine to form a single product. Understanding the type of reaction helps in predicting the products formed.

Stoichiometry is the calculation of reactants and products in chemical reactions based on their molar ratios. It allows chemists to predict how much of each substance is needed or produced in a reaction. In the given reaction, stoichiometry will help determine the correct coefficients to balance the equation accurately.