Answer:
- <em>Because the electrons in metallic lattice structures flow freely.</em>
Explanation:
The electrons in <em>metallic lattice structures</em> can flow freely as explained below.
Metallic elements are featured by metallic bonds.
The valence electrons in the metal atoms are loosely attached to the nucleus of their atoms. Thus, the electrons in a metallic structure can be shared in a way that is referred to as a "sea of electrons": the electrons are not attached to a specific nucleus but they are "delocalized", which means that they flow freely along the metallic structure.
That makes that wires and connections can conduct the electricity: the electrons flow freely.
It is false that compounds have all of the characteristics of the elements that form them.
Answer : Carbon tetrachloride, will show the greatest freezing point lowering.
Explanation :
For non-electrolyte solution, the formula used for lowering in freezing point is,
where,
= lowering in freezing point
= molal depression constant
m = molality
As per question, the molality is same for all the non-electrolyte solution. So, the lowering in freezing point is depend on the only.
That means the higher the value of , the higher will be the freezing point lowering.
From the given non-electrolyte solutions, the value of of carbon tetrachloride is higher than the other solutions.
Therefore, Carbon tetrachloride, will show the greatest freezing point lowering.
Answer:
100 mL is the volume of HCl needed to neutralize the 44.3 of Ba(OH)₂
Explanation:
This is the chemical equation:
2HCl + Ba(OH)₂ → BaCl₂ + 2H₂O
Formula for neutralization is:
Molarity of acid . Volume of acid = Molarity of base . Volume of base
0.121 . Volume of acid = 0.274 . 44.3
Volume of acid = (0.274 . 44.3) / 0.121 → 100