Answer:
The limiting reactant is propene,
.
Explanation:

Moles of nitrogen propene = 2 mol
Moles of oxygen = 10 mol
According to reaction, 2 moles of propene reacts with 9 moles of oxygen gas, then 2 moles of propene will react with:

According to the question, we have 10 moles of oxygen gas, which is more than 9 moles of oxygen gas. This indicates that propene is present in a limiting amount hence, it is a limiting reactant.
The limiting reactant is propene, hence the correct answer is the
.
Answer:
d) Make it flexible
Step-by-step explanation:
Raw hides dry out to form a hard material that can decay with an offensive smell when they become wet.
Tanning converts the protein of the raw hide into a stable material that will stay flexible and not decompose when it gets wet.
a) is <em>wrong</em>. The purpose of tanning is to soften the leather.
b) is <em>wrong</em>. You smooth the leather manually with fine sandpaper.
c) is <em>wrong</em>. Tanning does not impart water resistance. It prevents the leather from putrefying when it does get wet.
When the overall charge is equal to zero
Answer: The standard potential for this cell is +1.49 V at 25C.
Explanation:
![E^0_{[Sn^{2+}/Sn]}=-0.14V](https://tex.z-dn.net/?f=E%5E0_%7B%5BSn%5E%7B2%2B%7D%2FSn%5D%7D%3D-0.14V)
![E^0_{[Ti^{2+}/Ti]}=-1.63V](https://tex.z-dn.net/?f=E%5E0_%7B%5BTi%5E%7B2%2B%7D%2FTi%5D%7D%3D-1.63V)
As titanium has lower reduction potential, it will act as anode and tin will acts as cathode.

Using Nernst equation :
![E_{cell}=E^o_{cell}-\frac{2.303RT}{nF}\log \frac{[Ti^{2+}]}{[Sn^{2+}]}](https://tex.z-dn.net/?f=E_%7Bcell%7D%3DE%5Eo_%7Bcell%7D-%5Cfrac%7B2.303RT%7D%7BnF%7D%5Clog%20%5Cfrac%7B%5BTi%5E%7B2%2B%7D%5D%7D%7B%5BSn%5E%7B2%2B%7D%5D%7D)
where,
F = Faraday constant = 96500 C
R = gas constant = 8.314 J/mol.K
T = room temperature = 
n = number of electrons in oxidation-reduction reaction = 2

Where both
are standard reduction potentials.
= standard electrode potential of the cell = 1.49 V
= emf of the cell = ?
Now put all the given values in the above equation, we get:


Solid, Liquid, Gas, and Plasma