To balance: add coefficients (if needed) to make sure that number of atoms of each element on both sides are equal.
Complete reaction: CaO(s) + H2O(l) → Ca(OH)2(aq)
A key step in balancing chemical equations is correctly identifying the formulas of the reactants and products. For example, consider the reaction between calcium oxide, CaO(s), and H2O(l) to form aqueous calcium hydroxide.
Write a balanced chemical equation for this combination reaction, having correctly identified the product as Ca(OH)2(aq) .
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