Please help chemistry

What is Ag+ and N3- as a formula together?

Tell me the iupac names of the following alcohols:

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

27 drag each label to the correct location on the image. a particular exosolar system has five planets in total: a, b, c, d, and e. the table lists the orbital periods of these planets in days. planet orbital period (days) a 600 b 80 c 1,000 d 500 e 100 move each planet to its orbit in the system.