Balance the reaction. a coefficient of "1" is understood. choose option "blank" for the correct answer if the coefficient is "1." pb(no₃)₂ + nai → pbi₂ + nano₃

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.

At stp, what is the volume of 1 mole of co2?

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.