Chemistry, 07.10.2020 23:01 mikeymanfs
You have discovered a new element called element X. Element X has two isotopes. X-50 has a percent abundance of 80%. X-56 has an abundance of 20%. What is the atomic mass of element x?
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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.
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You have discovered a new element called element X. Element X has two isotopes. X-50 has a percent a...
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