What anions generally form precipitates? What are the exceptions?

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Write the balanced equation for a reaction between aqueous nitric acid (hno3) and solid lithium metal (this is a single replacement reaction)

Which liquid (h2o, h2o + soap, or h2o + salt) has the strongest cohesion and adhesion? (need now plz)