8. A solution with a pH of 4 is MORE or LESS acidic than a solution with a pH of 2.

a solution having pH 4 is less acidic as compared to a solution whose pH is 2.

Explanation:

the reason is more hydrogen ion in the solution provided by the 2 pH. in case of pH 4 free hydrogen ion concentration is low.

the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy