Question

question 21 (1 poin
listen
total moles of solute will remain the same when a solution is diluted, but the molarity decreases.

1. true
2. false

Explanation:

Dilution involves adding solvent (like water) to a solution. The formula for molarity is \( M = \frac{n}{V} \) (where \( n \) is moles of solute, \( V \) is volume of solution in liters). When diluting, we add solvent, so \( V \) increases, but \( n \) (moles of solute) doesn't change (since we're not adding or removing solute). As \( M \) is inversely related to \( V \) (when \( n \) is constant), increasing \( V \) decreases \( M \). So the statement is true.

Answer:

1. True