the barometric pressure measured outside an airplane at 9km (30,000ft) was 259 mmHg .Calculate pressure in KPa.

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.

Why is silver chloride is an ionic compound

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest