Calcium Carbonate + Hydrochloric Acid = Calcium Chloride + Carbon Dioxide + Water 1. Explain how you found out what Calcium Carbonate + Hydrochloric Acid equals to. 2. Why does calcium react with chlorine? Why doesn't it react with Hydrogen for example?

How far is the region from the equator or control climate

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

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.