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Answer:

Ca + 2HCl → CaCl2 + H2

explaination:

In a single replacement reaction, one element replaces another in a compound. In this case, calcium (Ca) reacts with hydrochloric acid (HCl) to produce calcium chloride (CaCl2) and hydrogen gas (H2). The correct balanced equation is Ca + 2HCl → CaCl2 + H2, which indicates that one calcium atom reacts with two hydrochloric acid molecules to yield one molecule of calcium chloride and one molecule of hydrogen gas. Balancing chemical equations is essential to obey the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction.

Topic: Chemistry, Chemical Reactions, Balancing Equations

Tags: chemistry chemical reactions balancing equations single replacement reaction

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Calcium reacts with hydrochloric acid in a single replacement reaction. Which reaction shows the correctly balanced equation?

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