Why is it important for an engineer who is designing a new home-cooling/heating system to have knowledge about the transfer of heat?

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

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.

Why do oxygen have a strong attractive force for electrons