Conner is testing the pH of a swimming pool and he finds it to be 6.5. The optimal pH for swimming is between 7.7 and 7.6. Conner adds a compound to the pool and waits a few hours. He retests the pool water and finds the pH to be 7.2. What did Conner do to raise the pH of the pool? A) He added water to raise the pH.
B) He added a base to raise the pH.
C) He added salt to raise the pH.
D) He added an acid to raise the pH.

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

Joan writes four numbers on the board in standard form, and then she writes their scientific notation