Answer:
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Explanation:
<h2>Problem 1. </h2>
<u>a) Data:</u>
- n₁ = 0.126 mol
- V₁ = 2.74 L
- n₂ = 0.126mol + 0.124mol
- V₂ = ?
- Conditions: constant temperature and pressure
<u>b) Physical principles:</u>
The volume occupied by a gas, when the temperature and pressure remain unchanged, is proportional to the number of moles of gas.

<u>c) Solution:</u>
Solve for V₂ , substitute and compute:

<h2>Problem 2.</h2>
<u>a) Data:</u>
- n₁ = 0.547mol
- V₁ = 295 mL
- V₂ = ?
- n₂ = 0.547mol + 0.342 mol
- Conditions: constant temperature and pressure
<u>b) Physical principles:</u>
The same as above: the volume occupied by a gas, when the temperature and pressure remain unchanged, is proportional to the number of moles of gas.

<u>c) Solution:</u>
Solve for V₂ , substitute and compute:

Answer :
The Nernst equation :
![E_{cell}=E^o_{cell}-\frac{2.303RT}{nF}\log \frac{[Anode]}{[Cathode]}](https://tex.z-dn.net/?f=E_%7Bcell%7D%3DE%5Eo_%7Bcell%7D-%5Cfrac%7B2.303RT%7D%7BnF%7D%5Clog%20%5Cfrac%7B%5BAnode%5D%7D%7B%5BCathode%5D%7D)
where,
= standard cell potential
n = number of electrons in oxidation-reduction reaction
F = Faraday constant = 96500 C
R= gas constant = 8.314 J/Kmol
T = temperature
[Anode] = anodic ion concentration
[Cathode] = cathodic ion concentration
Explanation:
Given elements:
F, Sr, P, Ca, O, Br, Rb, Sb, Li, S
Elements with the same chemical reactivity will belong to the same group on the periodic table. This implies that elements in the same column will have the same reactivity;
Li and Rb are both alkali metals in group 1
Ca and Sr are both alkali earth metals in group 2
F and Br are halogens in group 7
O and S are group 6 elements
P and Sb are both in group 5 on the periodic table
So these groupings show elements with the same chemical properties.
A. Apple juice is an example of a homogeneous mixture.