What is defined as the amount of solute in a given amount of solvent or solution?

The term that defines the amount of solute present in a given amount of solvent or solution is concentration. Concentration measures how much solute exists in a certain volume or mass of solvent or solution, providing crucial information about the solution's characteristics, such as its strength or reactivity.

In chemistry, concentration can be expressed in various units, such as molarity (moles of solute per liter of solution), molality (moles of solute per kilogram of solvent), or mass percent, among others. The importance of understanding concentration lies in its relevance to reactions, solution preparation, and titrations, where knowing the exact amount of solute is essential for accurate results.

By understanding concentration, chemists can predict how substances will behave in a solution, which is critical for experiments and practical applications in research and industry.