In a glass of lemonade powder what is the solvent?

The solvent in a glass of lemonade powder is water.

Here's why:

* Solvent: The substance that dissolves the solute (the substance being dissolved).

* Solute: The substance being dissolved.

When you mix lemonade powder with water, the water dissolves the powder, making it a solution. Therefore, water is the solvent, and the lemonade powder is the solute.