3. (05.05 LC) Consider the reaction 4FeS2 + 1102 - 2Fe2O3 + 8502. If 8 moles of FeS2 react with 15 moles of Oz, what is the limiting reactant? (3 points)
FeS2
O Fe₂O₃
002
O SO2

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).