Assuming there is excess acid, the equation for the reaction is Zn + 2HCl -> ZnCl2 + H2.
Mols of zinc = 20/65 (mass/relative atomic mass)
Ratio of Zn : ZnCl2 = 1 : 1
Hence mols of Zinc = mols of Zinc chloride
Mass of ZnCl2 = (20/65)(65+71)
= 41.8g
Based on the bond length, the molecular weight of the unknown metal X is 23.
<h3>What are ionic compounds?</h3>
Ionic compounds are compounds which are formed between oppositely charged ions.
When hydrogen combines with the group 1 metals, they form ionic compounds.
The group one metals that combine with hydrogen to firm ionic bonds include:
- Lithium to give Lithium hydride with equilibrium bond length of 0.239Å.
- Sodium to give sodium hydride with equilibrium bond length of 1.896Å.
- Potassium to give potassium hydride with equilibrium bond length of 2.321Å
The molecular weight of lithium is 7 g
The molecularweight of sodium is 23
The molecular weight of Potassium is 39.
Therefore, based on the equilibrium bond length, the molecular weight of the unknown metal X is 23.
Learn more about bond length at: brainly.com/question/3405662
Forces can be added only when they both are going in the same direction as 2n +2n = 4n of force in the same direction if they are 2 facing forces they would <span>have had to be subtracted, which ever force is greater that will be the momentum of the force.
Hope this helps.</span>
