Which part of making a solution always releases energy?
a. separating the solvent particles from one another
b. mixing the solute and solvent particles
c. separating the solute particles from one another
d. the overall change in forming the solution

Energy is released while b. mixing the solute and solvent particles

Explanation:

Solute is a component in the solution that is present in lesser quantity.

Solvent is a component present in larger quantity in the solution. It is the one that dissolves any substance within it   (the solute).

In any reaction when energy is released then it is termed as exothermic reaction.

In a reaction when energy is absorbed then it is termed as endothermic reaction.

When we separate solute and solvent in a solution , energy is required so it is endothermic. But while doing the reverse, that is, while mixing solute and solvent, energy is released.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

c. 4.54 x 10–12 j happens to be correct