Faça o balanceamento (acerte os esquemas químicos que se seguem, de modo a obedecerem à Lei de Lavoisier): a)Mg(s) + O2(g) → MgO (s) b) H2(g) + O2(g) → H2O (ℓ) c) N2(g) + H2(g) → NH3(g) d) SO2(g) + O2(g) → SO3(g e) Li (s) + O2(g)→ Li2O (s) f)Cℓ2(g) + HBr(g) → HCℓ (g) + Br2(g) g) Fe2O3(s) + Aℓ (s) → Aℓ2O3(s) + Fe (s) h) Zn (s) + HCℓ (aq) → ZnCℓ2(aq) + H2(g

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).

the ratio of the conjugate base to the acid required to attain the desired ph.