An iron ore was found to contain 92.0% pyrite (fool's gold). pyrite has the formula fes2and is 46.5% iron. how many grams of iron are there in 52.5 grams of iron ore? give only numerical value in the box below (no units)

There are 22.46 g of iron in 52.5 g of iron ore.

Explanation:

Iron ore:

92.0 FeS₂    100 g iron ore

      x            52.5 g iron ore

               x = 48.3 g FeS₂

Pyrite:

100 g FeS₂   46.5 g Fe

48.3 g FeS₂     y

              y = 22.46 g Fe

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.