Calculate δhrxn for the following reaction fe2o3(s)+3co(g)→2fe(s)+3co2(g).

Which of these are characteristics of a scientific law? check all that apply. it contains an explanation of facts. it states a fact about how nature works. it is based on observations of nature. it often changes over time with new experiments and technology. it explains why a group of hypotheses are related. it will most likely remain true even when scientists work with new experiments.