<u>Answer:</u> The cell potential of the above reaction is 0.52 V
<u>Explanation:</u>
The given chemical equation follows:

<u>Oxidation half reaction:</u> 
<u>Reduction half reaction:</u> 
To calculate the EMF of the cell, we use the Nernst equation, which is:
![E_{cell}=E^o_{cell}-\frac{0.059}{n}\log \frac{[Zn^{2+}]}{[Pb^{2+}]}](https://tex.z-dn.net/?f=E_%7Bcell%7D%3DE%5Eo_%7Bcell%7D-%5Cfrac%7B0.059%7D%7Bn%7D%5Clog%20%5Cfrac%7B%5BZn%5E%7B2%2B%7D%5D%7D%7B%5BPb%5E%7B2%2B%7D%5D%7D)
where,
= electrode potential of the cell = ? V
= standard electrode potential of the cell = 0.63 V
n = number of electrons exchanged = 2
![[Zn^{2+}]=1.0M](https://tex.z-dn.net/?f=%5BZn%5E%7B2%2B%7D%5D%3D1.0M)
![[Pb^{2+}]=2.0\times 10^{-4}M](https://tex.z-dn.net/?f=%5BPb%5E%7B2%2B%7D%5D%3D2.0%5Ctimes%2010%5E%7B-4%7DM)
Putting values in above equation, we get:

Hence, the cell potential of the above reaction is 0.52 V
Answer:
the mass number, trust me
A solution is when you have two or more substances (a solvent and solutes) mixed together, and you can't tell its components apart just by looking at it or under a microscope (it's homogeneous). All solutions are mixtures, but not all mixtures are solutions because mixtures can be heterogeneous.
Answer: number of atoms is 5.21 · 10^24
Explanation: Atomic mass of Be is 9.012 g/mol.
Number of moles n = m/M = 78.0 g / 9.012 g/mol =
Multiply this with Avogadro number Na = 6.022*10^23 1/mol
Answer:
0.52 mol
Explanation:
Using the general gas equation formula:
PV = nRT
Where;
P = pressure (atm)
V = volume (Liters)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
At STP (standard temperature and pressure), temperature of a gas is 273K, while its pressure is 1 atm
Using PV = nRT
n = PV/RT
n = (1 × 11.74) ÷ (0.0821 × 273)
n = 11.74 ÷ 22.41
n = 0.52 mol
There are 0.52 moles in the basketball