There are civil, electrical, mechanical, aerospace, and marine engineers. (there a many different types)
Answer:(D) different number of neutrons per atom
Explanation: Honestly, I just looked it up on Socratic.
The ANSWER is D
salt In water because it is a simple ion pair Na+1 and Cl-1
Hydrogen Fluoride is similar: H+1 and F-1 and since it is a polar ion pair too it dissolves in water
The best answer is simply human error or being in a area where the environment could have an impact on your result.
Two Half Cell reactions are as follow,
3e⁻ + Al⁺³ → Al (Reduction Reaction)
Mg → Mg⁺² + 2e⁻ (Oxidation Reaction)
In order to balance the number of electrons, multiply reduction reaction by 2 and oxidation reaction by 3.
So,
6e⁻ + 2 Al⁺³ → 2 Al
3 Mg → 3 Mg⁺² + 6e⁻ (e⁻ cancelled)
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2 Al⁺³ + 3 Mg → 2 Al + 3 Mg⁺²
Result:
At Anode Magnesium metal is Oxidized and At Cathode Aluminium Ions are reduced.