An unknown compound contains only c, h,o.
combustion of 6.80g of this compound produced 16.6g of c02 and 6.80g of h20.
what is the empirical formula?

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.

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?

Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f