when ethanol combines with oxygen 13366.7 kj of heat is released how many grams of carbon dioxide is produces during an enthalpy change of -156.8 kj

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

i do not get it   at all