In the chemical equation zn + 2hcl → zncl2 + h2, the reactants are

a. zinc chloride and hydrogen.

b. zinc and hydrogen carbonate.

c. zinc chlorate and water.

d. zinc and hydrochloric acid.

D. zinc and hydrochloric acid.

Explanation:

Step 1: The balanced equation:

Zn + 2HCL → ZnCl2 + H2

Step 2:

All chemical reactions involve both reactants and products. Reactants are substances that start a chemical reaction, and products are substances that are produced in the reaction.

This means the substances on the left side, Zinc (Zn)  and hydrochloric acid (HCl) are the reactants and will react with eachother, to form the products Zinc chloride (ZnCl2) and hydrogen gas (H2).

Option A: is not correct because zinc chloride and hydrogen are the products

Option B: is not correct because there is no hydrogen carbonate in the reaction

Option C: is not correct because there is no zinc chlorate, neither water in the reaction

The correct answer is D. zinc and hydrochloric acid.

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).