Asolution of ammonia has a ph of 11.8. what is the concentration of oh– ions in the solution?

a.) 1.00 x 10^-14 m
b.) 6.33 x 10^-3 m
c.) 1.58 x 10^-12 m
d.) 1.58 x 10^-4 m

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).