In Fe2O3 + 3CO2 If you wanted to produce 7500g of Fe how many grams of CO must be used

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.

Lewis structure and molecular geometry for nh2cl

How many neutrons does a atom of cobalt have?