Will gave brainlesst which of the following planets has the lowest average orbital speed compared to the others? earth jupiter mars mercury

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?

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit