During an investigation, students dropped a tarnished penny into a solution of acetic acid and sodium chloride. Tiny
bubbles formed around the penny, and the penny was less
tarnished after two minutes of soaking in the acetic acid and
sodium chloride solution. The student inferred that a
chemical reaction occurred.
What evidence supports the student's inference?

The answer to the question: choose the correct statement.  a) when ethane reacts with fluorine gas the product is less stable.b) addition reactions of unsaturated hydrocarbons and halogens requires a high activation energy.  c)the double covalent bond within unsaturated hydrocarbons requires a lot of energy to break.  d)the double covalent bond within unsaturated hydrocarbons can be broken easily.is: a) when ethane reacts with fluorine gas the product is less stable.

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