I believe the correct answer from the choices listed above is the last option. The term that would best describe the <span>role of hydrogen gas in the formation of a water molecule would be a reactant. Water has a formula of H2O where it contains water so it should be that hydrogen is a reactant. </span>
Bull sharks have the unique ability of keeping salt in their bodies even freshwater
Answer: D!! ( difference in the potential energy of the reactants and products )
Explanation:
i have the same test
Magnesium in hydrochloric acid forms H2 (hydrogen) gas according to the balanced chemical equation:
Mg + 2HCl→H2 + MgCl2