AP BIOLOGY

Detailed explanation-1: -Laboratory thermomter is used to measure the temperature of boiling water.

Detailed explanation-2: -A manometer 6 measures the applied pressure on the external arm of the U-tube 2. The liquid is allowed to boil vigorously until all air is removed from the sample side of the U-tube 2.

Detailed explanation-3: -A liquid’s boiling point can be determined using the capillary method, where an inverted capillary is placed in the liquid of interest and the liquid is heated. As the temperature increases, the air in the capillary escapes and is replaced by the vapor of the liquid.