The atomic mass of iron is 55.85, and oxygen is 16.0. what is the mass of 6.02 × 1023 molecules of fe2o3? 71.85 g 143.7 g 159.7 g 199.55 g 215.55 g

Calcium chloride +gold(1) oxide—>

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals