Find the concentraion of [OH-] in a .003 M solution of HBr

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.

Gymnast always perform on padded mats. how does the mats protect the gymnast

What shape would a molecule with two bound groups and two lone pairs have?