139.850 there ya go hope u ace it
Zn + 2HCl = ZnCl₂ + H₂↑
In the reaction forms zinc chloride and hydrogen.
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A reaction where the products have less chemical potential energy than the reactants had originally is called an exothermic reaction. Although the scientist didn't observe light or sound, an observation that would support her prediction is the rise in temperature after the reaction has completed. Exothermic reactions release energy in the form of heat, and the temperature would rise in an exothermic reaction.
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Answer: Hydrochloric acid poses a various health risk
Melting, due to the strong forces provided by lattice energy framework, would require more energy
