An athlete had 14% body fat by mass. What is the weight of fat, in pounds, of a 82-kg athlete? Express your answer to two significant figures & include the appropriate units.

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.

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

Why is permeable soil best for plants that need a lot of drainage?