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State symbols consist of lower-case abbreviations following a reagent in a chemical equation. They are s for solid, l for liquid, g for gas and aq for aqueous. They are typically shown in parentheses.

Example 1: 2Na(s) + Cl2(g) --> 2NaCl(s) Solid sodium plus chlorine gas yields solid sodium chloride (table salt.)

Example 2: NaHCO3(s) + HC2H3O2(aq) --> NaC2H3O2(aq) + H2O(l) + CO2(g) Solid baking soda plus vinegar solution in water yields sodium acetate in solution, liquid water, and carbon dioxide gas.

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