2 Equation on chemistry that I have been struggling with, needed some assistance
Reactants amd such.

2. Copper (II) carbonate plus sulfuric acid produces copper (II) sulfate and carbon dioxide and water.

3. Calcium hydroxide plus carbon dioxide gas produces calcium carbonate and water.

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).