Classify these atomic orbitals as s, p, or d according to their shape.

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

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.

In one or two grammatically correct sentences, write a definition for the term molecule geometry