A 3.87 ⋅ 10 − 2 M solution of HBr is made. What is the pH of this solution? 2.35 What is the pOH of this solution? 1165 What is the [OH-] in the solution? Record this answer in scientific notation using 3 sig figs.

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).