Consider the transmutation reaction show. What is the missing species in the reaction? a. 4/2 He
b. 0/-1 e
c. 1/0 n
d. 0/0 y

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

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.