Answer:
- <em>When measuring concentration you compare </em><u>the amount of solute to the amount of solvent or solution.</u>
Explanation:
The <em>concentration</em> is a measure of how much solute is present in certain amount of solvent or solution. There are many quantitative expressions for the concentration. Some of those expressions are: percentage, molarity, molality, molar fraction, among others.
This table shows the expressions for some concentration measures, showing the amounts compared.
<u>Concentration</u> <u>amounts compared in form of ratio</u>
Percentage, mass/mass (mass of solute / mass of solution) × 100
Percentage, vol./vol. (vol. of solue / vol. of solution) × 100
Molarity (moles of solute / liters of solution)
Molality (moles of solute / Kg of solvent)
