Which of the following is not considered a phase change? O melting
O freezing
O burning
O evaporation

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

0.2348 grams of pbcl2 used to form 44.0 ml of solution.