Hydrochloric acid has the chemical formula hcl. it is made of one hydrogen atom bonded to one
chlorine atom. what information is necessary to determine whether hcl is a polar molecule?

HCL is a polar molecule, as chlorine has a higher electronegativity than the hydrogen. Thus, it attracts electrons to spend more time at its end, which gives it a negative charge and hydrogen a positive charge.

the answer to your question is c.

if you read the house of usher you should know that the house was haunted

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).