A solution of 1.0 M KBr is diluted. Which of the following happens during the dilution?
1) molarity increases; volume is constant; moles of KBr decrease
2) molarity increases; volume increases; moles of KBr are constant
3) molarity decreases; volume decreases; moles of KBr are constant
4) molarity decreases; volume increases; moles of KBr are constant
5) molarity increases; volume is constant; moles of KBr increase