What families make up the d block

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 many moles of co2 are produced during the complete combustion of 3.6 moles of c2h6

Silver reacts with oxygen to produce silver oxide. (write balanced chemical equation and identify type of chemical reaction.)