Which formula can represent hydrogen ions in an aqueous solution?
OH-(aq)
Hg2^2+(aq)
H30+(aq)
NH+(aq)

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

Explain what happens at the saturation point when adding salt to water at room temperature.

Can someone me with 3 and 4 plz. this is for masteries test.