An aqueous solution contains 0.435 M nitrous acid. Calculate the pH of the solution after the addition of 2.84×10-2 moles of potassium hydroxide to 225 mL of this solution. (Assume that the volume does not change upon adding potassium hydroxide)

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

Elias is almost correct. he just got it backwards.the correct answer is that it demonstrates elastic potential energy transforming into kinetic energy.

It shows that the experiment is designed properly.