Which mixture has arsenic and calcium arsenate in it?

What landmass collided with Laurentia and caused the Acadian Orogeny? Are there any physical features that countries might fight over? What is homogeneous and non homogeneous equations? Which city lies at 45 degrees north and 75 degrees west? What is the effect called that shows that some stars are closer than us than others? Why do composite volcanoes occur at the boundary between oceanic crust and continental crust? Which connective tissue type is found in the walls of large blood vessels and in ligaments supporting transitional epithelia? Does the amount of magnesium ribbon burned affect how much magnesium oxide is produced? How do STDs affect the reproductive system? What return temperature would you expect for a chilled water system? Sequence of events in the life of a eukaryote cell? Is Mercury bumpy? What is the aim of hydrolysis of p-nitroacetanilide? How do Japanese people prepare food? Whats a tongue frenulum? How does equilibrium get reached? What is abstract noun of Deep abstract noun? Can you have straight hair as a kid then have curly hair as an adult? What role do the kidneys play in vitamin d function? The transport mechanism for a neurotransmitter across the synaptic cleft is called?