The combustion of ethene, C2H4, is an exothermic reaction. Use the information below to determine the amount of energy given off when 2.3 moles of ethene is combusted. C2H4 + 3 O2 2 CO2 + H2OH= - 1390 kJ

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa

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.

The polarity of an oxygen-hydrogen bond is higher than the polarity of a nitrogen-hydrogen bond, allowing amines to be more soluble than alcohols.