The correct answer among the choices given is the first option.The teacher most likely is talking about distillation of a mixture. Distillation is a unit operation that separates component substances from a liquid mixture which is shown by the teacher. Also, the most common purifying technique in the production of gasoline is by this process.
A.
Increases
When a pressure increases the density usually increases too
Answer:
partial negative is O(oxygen) and partial positive is (H) Hydrogens
Explanation:
Because the molecule has covalent bonds, all charges are partial.
Partial negative is O(oxygen) and partial positive is (H) Hydrogens.
1. HNO₃ nitric acid
Al(NO₃)₃ aluminium nitrate
You may find the the attached picture the graphical representation of both compounds.
2. You may find bellow the full equations
Explanation:
1. HNO₃ nitric acid, Al(NO₃)₃ aluminium nitrate
dissociation equation
HNO₃ (l) + H₂O (l) → NO₃⁻ (aq) + H₃O⁺ (aq)
Al(NO₃)₃ (s) + H₂O (l) → Al³⁺ (aq) + 3 NO₃⁻ (aq)
2. molecular equations
Al(OH)₃ (s) + NaOH (aq) → NaAl(OH)₄ (s)
Ba(OH)₂ (aq) + NiCl₂ (aq) → BaCl₂ (aq) + Ni(OH)₂ (s)
ionic equations
Al(OH)₃ (s) + Na⁺ (aq) + OH⁻ (aq) → NaAl(OH)₄ (s)
Ba²⁺ (aq) + 2 OH⁻ (aq) + Ni²⁺ (aq) + 2 Cl⁻ (aq) → Ba²⁺ (aq) + 2 Cl⁻ (aq) + Ni(OH)₂ (s)
Learn more about:
molecular and ionic equations
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