[header] How to calculate the concentration of a solution [title] Learn the vocabulary. [step] Concentration is a ratio comparing the amount of one substance to the amount of the entire mixture. For instance, if you plan to mix sugar and vinegar together for an experiment, you'll need to calculate the concentration of sugar in the mixture. 
Here's how each ingredient would be described in the chemistry report : [substeps] The sugar is the solute, which is the substance being dissolved. You are measuring the concentration of the solute.