Answer:D
Explanation:
Menirals are obtained from the rocks..which contain elements in combined states,specialy metals.
These metals are then extracted and purfied by metallurgy
Answer:
the forward and reverse reactions occur at the same rate
Explanation:
A reaction is in chemical equilibrium when the rate of the forward reaction equals the rate of the reverse reaction.
In equilibrium reaction the concentration of the reactants and products is constant. A reaction is in chemical equilibrium when the rate of the forward reaction equals the rate of the reverse reaction. The chemical equation will be shown as,
α A + β B ⇌ σ S + τ T
Amphiprotic compounds are able to both donate and accept a proton.
Amphiprotic compounds contain a hydrogen atom and lone pair of valence electron.
For example, HSO₃⁻ (hydrogen sulfate ion) is an amphiprotic compound.
Balanced chemical equation for reaction when HSO₃⁻ donate protons to water:
HSO₃⁻(aq) + H₂O(l) ⇄ SO₄²⁻(aq) + H₃O⁺(aq).
Ka = [SO₄²⁻] · [H₃O⁺] / [HSO₃⁻]
Balanced chemical equation for reaction when HSO₃⁻ accepts protons from water:
HSO₃⁻(aq) + H₂O(l) ⇄ H₂SO₄(aq) + OH⁻(aq).
Kb = [H₂SO₄] · [OH⁻] / [HSO₃⁻]
Water (H₂O), amino acids, hydrogen carbonate ions (HCO₃⁻) are examples of amphiprotic species.
Another example, water is an amphiprotic substance:
H₂O + HCl → H₃O⁺ + Cl⁻
H₂O + NH₃ → NH₄⁺ + OH⁻
More about amphiprotic compounds: brainly.com/question/3421406
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Minerals determines the composition of a rock
A) They are on the outside of an atom