There may be a relationship between the frequency of earthquakes and a: magnitude b: tsunamis c: intensity d: liquefaction

How can the periodic table be used to predict the behavior of elements?

What are some natural measures of time

What mass of iron must be in a hot pack to provide -335kj of heat when the iron reacts with oxygen and is converted to iron (111) oxide according to the following thermochemical equation? 2fe(s) + 1.5o2(g)—> fe2o3(s) delta h= -824.2kj/mol