Answer :
By testing an unknown CuSO₄ solution's absorbance with a Colorimeter The concentration on the horizontal axis of the graph can be calculated by finding the absorbance of unknown on the vertically axis of the graph.
What do you mean by concentrations?
Concentration is the amount of a substance in a particular space. Another definition of concentration is the proportion of the solute to the fluid or whole solution. Usually, mass per volume is used to define concentration.
What is an example of a concentrated solution?
In a concentrated solution, the solute is present in the solvent at high quantities. Examples include orange juice, brine solution, and dark tea. To make a diluted solution, large amounts of the solvent are combined with little amounts of the solute. Examples include salt solution and light-colored tea.
To know more about Concentration visit:
https://brainly.com/question/10725862
#SPJ4