Apure sample contains only nitrogen and oxygen atoms. if the sample is 30.4% nitrogen, by weight, what is the empirical formula of the molecule?

first one is the correct answer

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