A metal strip reacts slowly when placed in a light blue solution, and much faster when placed in a dark blue solution at the same temperature. Using the collision theory, explain this phenomenon.

Increase in the color intensity and hence the concentration of the reacting species increases the rate of the reaction according to collision theory

Explanation:

The given parameters are;

Rate of reaction of metal strip in light blue solution lesser than rate  of reaction of the metal strip in dark blue solution

Therefore, the color of the solution derives from the concentration of the reacting species involved in the reaction.

The increase in the darkness of the blue solution stems from the increase in the concentration of the reacting species which according to collision theory increases the fraction of the effective collisions, thereby increasing the reaction rate.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

the answers are

c and c