Zn as a limiting reactant
N₂ as an excess reactant
Theoretical Yield : 13.15 g
<h3>Further explanation</h3>
Reaction
3 Zn + N₂ ⇒ Zn₃N₂
Ar Zn : 65,38 g/mol
Ar N₂ : 28.0134 g/mol
mol Zn
mol N₂
limiting reactant : the smaller ratio(mol:coefficient)
mol ratio Zn : N₂ :
Zn as a limiting reactant(smaller ratio)
N₂ as an excess reactant
mol Zn₃N₂ :
mass of Zn₃N₂ (Theoretical Yield) :
Answer:
Explanation:
First count the protons. I think there are 10 of them. That pretty much locks it in. The atom must be Neon.
All the electrons are in the first 2 rings and there are 10 all together.
Neon
The less soluble salt : PbCl₂
<h3>Further explanation</h3>
Given
0.1 M NaCl
Required
The less soluble salt
Solution
If we see from the answer option, the salt that is more difficult to dissolve in NaCl is PbCl₂ because it has the same ion (Cl)
When PbCl₂ is dissolved in water, ionization will occur
PbCl₂ ⇒ Pb²⁺+ 2Cl⁻
So, when dissolved in NaCl, NaCl itself will be ionized
NaCl ⇒ Na⁺ + Cl⁻
Based on the principle of equilibrium, the addition of an ion (one of the ions is enlarged), the reaction will shift towards the ion that was not added. In addition to this Cl ion, the reaction will shift to the left so that the solubility of PbCl₂ will decrease (the reaction to the right decreases)
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