One of the reactions for rusting iron is as follows: 4Fe + 3O2 → 2Fe2O3 (MM Fe: 55.85 g/mol; MM O2=32 g/mol; MM Fe2O3=159.70 g/mol) If 2.80 moles of iron, Fe, rust completely, how many grams of iron (III) oxide are formed?

According to stephen hawking in the "origin of the universe" lecture, "why are we here" and "where did we come from" are questions that

Which is these is not a benefit of parallel structure? a)clarity b)classification c)emphasis d)balance

Which sentence does not contain an intensive pronoun? a) i guess i will just take out the trash myself. b) while treating herself to lunch, angie ran into an old friend. c) tony himself made dinner last night even though he hates to cook. d) lisa wondered if she herself was the one who left the oven on all day.