Please answer Compared to a solution with a pH of 2, a solution with a pH of 1 is
A. An acid 10 times stronger
B. A base 10 times stronger
C. An acid 1/10th as strong
D. A base, 1/10th as strong

Which substance is a strong base?
A. Vinegar B. Soap
C. lemon juice
D. Drano/Liquid Plu

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