What does delta S < 0 mean in a reaction?
A. The reaction was exothermic
B. The reaction was endothermic
C. The reaction is at equilibrium
D. The reaction increased in order

the millers tale is the answer.

14 days is the half-life of phosphorus-32

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).