if na reacts with chlorine to form nacl, which of the following elements reacts with na to form an ionic compound in a one-to-one ratio, and why?

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?