If the hot- tub heater provides 5900kJ / m * i * n how long, in hours, will it take to heat the water in the hot tub from 36 degrees * F to 133 degrees * F ? If the tub is filled with 450 gal of water

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.

What does x represent in the formula for the compound xcl4?

What is the solubility of substance?