You and your family have decided to plan a trip to the Grand Canyon this summer. The pictures below show the features of a part of the Grand Canyon and where the Grand Canyon is located (red star).You and your family have decided to plan a trip to the Grand Canyon this summer. The pictures below show the features of a part of the Grand Canyon and where the Grand Canyon is located (red star).

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)