Question

The air you breathe is made of 21% oxygen and 78% nitrogen. The oxygen in air is the _____ and the nitrogen is the _____.

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solution, solute
solute, solvent
solvent, solution

Answer 1

The answer is solute, solvent

In a solution, a solute the component which is present in lesser amount while a solvent is present in greater amount. Since nitrogen is present in a greater amount than oxygen (78% > 21%), then the oxygen must be the solute and the nitrogen must be the solvent in the air.