Given the following equation, what is the correct form of the conversion factor needed to convert the number of moles of o2 to the number of moles of fe2o3 produced? 4fe(s) + 3o2(g) → 2fe2o3(s)

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical reaction is:

According to stoichiometry:

3 moles of are required to get 2 moles of

Thus the conversion factor is

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).