<u>Answer:</u> The equilibrium constant for the given reaction is 4.224
<u>Explanation:</u>
We are given:
Equilibrium concentration of water = 0.250 M
Equilibrium concentration of hydrogen gas = 0.330 M
Equilibrium concentration of oxygen gas = 0.800 M
For the given chemical reaction:

The expression of
for above reaction follows:
![K_{eq}=\frac{[H_2][O_2]}{[H_2O]^2}](https://tex.z-dn.net/?f=K_%7Beq%7D%3D%5Cfrac%7B%5BH_2%5D%5BO_2%5D%7D%7B%5BH_2O%5D%5E2%7D)
Putting values in above expression, we get:

Hence, the equilibrium constant for the given reaction is 4.224



<h3>Option c Deforestation.</h3>

<h2>I hope it will help you. </h2>
Answer: Molarity of
anions in the chemist's solution is 0.0104 M
Explanation:
Molarity : It is defined as the number of moles of solute present per liter of the solution.
Formula used :

where,
n= moles of solute
= volume of solution in ml = 100 ml
Now put all the given values in the formula of molarity, we get

Therefore, the molarity of solution will be 

As 1 mole of
gives 2 moles of 
Thus
moles of
gives =
Thus the molarity of
anions in the chemist's solution is 0.0104 M