3 valence electrons are transferred in the formation of the compound potassium nitride because nitrogen needs 3 valence electron to become stable, or to have the electron configuration of noble Gases.
The answer is to increase the surface area of the solute.
You see it dissolves faster because there is a lot more water touching it when it is has a higher surface area.This can be achieved by crushing
Answer:
–187.9 J/K
Explanation:
The equation that relates the three quantities is:

where
is the Gibbs free energy
is the change in enthalpy of the reaction
T is the absolute temperature
is the change in entropy
In this reaction we have:
ΔS = –187.9 J/K
ΔH = –198.4 kJ = -198,400 J
T = 297.0 K
So the Gibbs free energy is

However, here we are asked to say what is the entropy of the reaction, which is therefore
ΔS = –187.9 J/K
All you need to do the cross the charges and put it as suffixes.
D+2 + E-1 ----> DE2
answer is C