1.The reaction of iron(III) oxide (Fe2O3) and hydrogen (H2) is represented by the following unbalanced chemical equation. 1 Fe2O3(s)  3 H2(g) → 2 Fe(s)  3 H2O(l)
Determine the mass in grams of hydrogen gas needed to react completely with
33.5 g Fe2O3.
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Calculate the number of molecules present in 0.750 mol of mgo.

Fossil fuels are organic compounds that are made from

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)