Heating a particular ether with HBr yielded a single organic product. Which of the following conclusions can be reached? A) The reactant was a methyl ether.
B) The reactant was a symmetric ether.
C) The reactant was a cyclic ether.
D) Both B and C may be correct.

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