1.) Why can a solid copper penny be dissolved in nitric acid, but not in hydrochloric acid? Modern pennies are made from zinc metal plated with copper. What happens to a modern penny when it is placed inside a bath of hydrochloric acid after the penny is scratched, exposing some of the zinc?
1.) Why can a solid copper penny be dissolved in nitric acid, but not in
hydrochloric acid? Modern pennies are made from zinc metal plated with
copper. What happens to a modern penny when it is placed inside a bath of hydrochloric acid after the penny is scratched, exposing some of the zinc?
2.) The deteriorating iron framework inside the Statue of Liberty was replaced with stainless steel as part of a major restoration project. The work was finished in 1986, exactly one hundred years after the statue was first
completed. To avoid any
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