Answer:
Single Replacement; 2, 1, 1, 1
Explanation:
2HCl + Zn → H2 + ZnCl2
In a single replacement reaction, one specie is replaced by another specie in a chemical reaction.
If we look at the reaction above, zinc metal reacted with hydrochloric acid. The reaction proceeds in such a manner that zinc replaces hydrogen in hydrochloric acid. This is a single replacement reaction because only one chemical specie is displaced in the reaction.
Answer:
D.
Explanation:
An Arrhenius acid is a compound that increases the H+ ion concentration in a water solution.
Answer:
sedimentation
Explanation:
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Mole of electron required by
mole is 
- Faraday law expressed how the change that is been being produced by a current at an electrode-electrolyte interface is related and proportional to the quantity of electricity that is been used.
- There is one mole of electron required for 1 Faraday of electricity.
- Avogadro constant is

- Mole of electron can be calculated by dividing the number of electron by avogadro's constant.
=
= 
Therefore, it requires
Faraday of electricity for the 
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