Answer:
The physical state of each reactant and product
Explanation:
Chemical reactions are depicted in the form of an equation involving the chemical formula of the reactants and that of the products. The coefficients in front of the reactants and products represent the stoichiometry or the respective moles of the reaction participants.
In addition, the symbols in parenthesis placed after the chemical formula represent the physical state of the chemicals.
(s) = solid, (aq) = aqueous, (l) = liquid, (g) = gas
In the given reaction:
CaCl2(aq) + 2AgNO3(aq) → Ca(NO3)2(aq) + 2AgCl(s)
CaCl2, AgNO3 and Ca(NO3)2 are all in the aqueous phase
AgCl is in the solid phase
