The reaction represented by the equation Pb(NO3)2(aq) + 2KI(aq) ® PbI2(s) + 2KNO3(aq) is a… A) synthesis reaction
B) decomposition reaction
C) combustion reaction
D) double-displacement reaction

the answer is b. dilution

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).