A "balanced" equation.

reactants ---> products

reactants -----> products is correct

An arrow or an equals sign separates reactants from products in a chemical equation.

The equation given is correctly balanced, because it contains the same numbers of each kind of atoms in the reactants as in the products.

reactants: fructose and glucose product: sucrose

The reactants are the substances that are doing the reacting to produce the result. (The substances on the left side of the equation are the reactants) So ZnS & O2 are the reactants.

In this case, the equation is balanced.

zinc and hydrochloric acid

The total mass of the reactants equals to the total mass of the product.

Chemical equations have frequently an equal sign (=) between reactants and products.

Yes, one equals one. If you get that when solving an algebraic equation, the equation is true for all real numbers.

In a closed system, the mass of the products equals the mass of the reactants.

Equation, not expression. A and B are two numbers. (A + B)2 = A2 + B2 + 2(AB) ----------------------------------

Products. keq equals [products] / [reactants] . A (-) Keq indicates a reactant favored reaction.

The product of the LCM and GCF of two numbers equals the product of the two numbers.