Sodium acetate has a molar mass of 84.00g/mol. What is the mass of 2.5??

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.

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

Why do cells appear different in distilled water than they do in 10% salt water?