Which of the following apply to a solution’s concentration.
all that
the physical properties of a solution are not affected by the concentration of the components.
boiling points and freezing points of solutions change as the concentration of the solute changes.
moles of solute = (liters of solution) x (molarity of solution)
(initial concentration)(initial volume) = (final concentration) (final volume)
concentration affects if an acid is weak or strong.

All of them apply according to the exam your are on because they all need concentration to work up the certain chemical

Explanation

The physical properties of a solution are not affected by the concentration of the components.

Boiling points and freezing points of solutions change as the concentration of the solute changes.

Moles of solute = (Liters of solution) x (Molarity of solution)

(Initial Concentration)(Initial Volume) = (Final Concentration) (Final Volume)

Concentration affects if an acid is weak or strong.

1. they vary with a higher number because boiling is way hotter than melting

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.