6.72 L of hydrogen current is flows through a head copper (I) oxide powder. a. Find the mass of the obtained copper.
b. Find the mass of the used oxide.

(H =1, Cu =64, O =16, at STP: 2g of H 2 has 22.4L)

thats a little if u want the answer just look it up on google thats what i do haha : )

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).

fe 55.85 g/mol and h2o 18.02 g/mol.