Qual o significado de Substâncias e Misturas, Mistura homogênea e heterogênea, Substância simples e composta e Fases

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.