If we were able to count atoms at the rate of 10 million per second, it would take about 2 billion years to count the atoms in one mole. A solution is a homogeneous mixture where all particles exist as individual molecules or ions. Measurement in moles is a measurement of the amount of a substance. The results are displayed in the second table which will tell you whether you got the correct answer or not and keeps a running total of your score. If you get a question wrong, you can re-enter and recheck your answer.
Normality is an alternative way to express the concentration of a solution.
One equivalent can either react with or take the place of one mole of hydrogen ions . On dissolving, ionic compounds dissociate into positive and negative ions in solution. Normality is therefore used in connection with acids and bases to describe the ionic strength of the compound - the number of hydrogen ions produced per mole of acid is the number of equivalents per mole. One molecule of hydrochloric acid dissociates to yield one hydrogen ion and one chloride ion in solution. This means that one mole of hydrochloric acid can yield one mole of hydrogen ions and one mole of chloride ions in solution.