How many reactants does the following equation have h2o → h2 + o2
a)1
b)2
c)3

Answer;

A) 1 (one)

Explanation;Reactants are elements and/or compounds that are changed into other substances called products.The reactants are what you start with and the products are the result. In the chemical reaction equation the reactants are on the left and the products are on the right.In this case; H2O is the only reactant, while H2 and O2 are the products.