A chemist dissolves of pure perchloric acid in enough water to make up of solution. Calculate the pH of the solution. Round your answer to significant decimal places.

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth