The combustion of fuel oil to heat a home is an example of a/an A) exothermic reaction
B) metathesis reaction
C) endothermic reaction
D) substitution reaction

What are the first three quantum numbers for the electrons located in subshell 2s?

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

Consider the story you just read. all but one of the choices below indicate that something is living.