Can anyone convert this 2 structural formulas into rational ones

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?

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?