What is the pOH in a solution that has pH = 11.39?

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.

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o