Which statement best describes the $\mathrm{pH}$ of pure water? It is neutral because the concentration of hydronium ions equals that of hydroxide ions. It is neutral because the pure liquid contains neither hydronium ions nor hydroxide ions. It is acidic because it has a hydronium ion concentration of $1.0 \times 10^{-7} \mathrm{M}$. It is balsic because it has a hydroxide ion concentration of $1.0 \times 10^{-7} \mathrm{M}$.

When are commas normally used? Select three options. Abc after introductory phrases and clauses around restrictive phrases and clauses around nonrestrictive phrases and clauses before the conjunction joining independent clauses before the conjunction introducing a dependent clause Mark this and retum Save and Exit Next

Which statement about the self-ionization of water is correct? Two water molecules interact to form a water molecule and a hydroxide ion. Two water molecules interact to form a hydronium ion and a hydroxide ion. Two water molecules interact to form two hydronium ions. Two water molecules interact to form two hydroxide ions.

1 2 3 4 5 B 7 8 9 A substantiated opinion is best supported by personal opinions. individual thoughts. expert opinions. common beliefs.

Which sentences correctly use parentheses? Select two options. We went to the state fair (held in the state capital) for the first time this year. For my birthday, my parents got me tickets to Hamilton (my favorite musicall). My sister has homework for three classes tonight (math, English, and biology). The student body voted to select (the person) who would get the Best Teacher award. (When he made the hot chocolate) my brother left out the most important ingredient. Mark this and return Save and Exit Next com/ContentViewers/AssessmentViewer/Activit