Answer:
(2) b, c, f
Explanation:
Hello,
In this case, for the undergoing chemical reaction:

The Gibbs free energy of reaction at 25 °C is related with an equilibrium constant of:
![K=exp(-\frac{\Delta G^0 }{RT} )=exp[-\frac{-21700J/mol}{8.314J/(mol*K)*298.15K}]=1.58x10^{-4}](https://tex.z-dn.net/?f=K%3Dexp%28-%5Cfrac%7B%5CDelta%20G%5E0%20%7D%7BRT%7D%20%29%3Dexp%5B-%5Cfrac%7B-21700J%2Fmol%7D%7B8.314J%2F%28mol%2AK%29%2A298.15K%7D%5D%3D1.58x10%5E%7B-4%7D)
Now, at the given moment, the reaction quotient turns out:

Thus, since Q<K, the reaction will have too much reactants that will produce more products, shifting the reaction rightwards to them.
Hence, with the given information the statements b, c and f are correct, so the answer is: (2) b, c, f.
Best regards.
I believe it would be the 2nd one, “increasing the area of their contact”.
Answer:
The differences in water temperature and salinity are responsible for deep water or ocean currents. Other inducing factors for water currents are wind, cabbeling, Coriolis effect and breaking waves.
It's NF3 (one Nitrogen and 3 Flouride)
Answer:
pH= 3.82
Explanation:
Sodium ethanoate or sodium acetate (CH3COONa) ionises completely.
Ethanoic acid or acetic acid (CH3COOH), ionises partially because it is a weak acid.