:D help please
A, B,C, or D

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

The enthalpy of formation of water is -285.8 kj/mol. what can be inferred from this statement?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure