‏A solution contains either Cr3+ or Ni2+ ion. Describe a reaction with a single reagent that will identify which ion is present.

What is a coast of using technology to transport water? a.cities can be built in otherwise uninhabitable areas. b.crops can be irrigated and grown in new areas. c.floods can be averted in flood-prone areas. d.freshwater supplies can be depleted in an area.

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?