Question

water the solute remaining after 2 minutes of agitation is removed from each of the beakers and weighed. which of the following solutions has the highest concentration?

a substance a
b substance b
c substance c

Explanation:

Step1: Calculate the amount of solute dissolved

The amount of solute dissolved = Initial amount of solute - Final amount of solute.
For Substance A: \(15 - 15=0\) g.
For Substance B: \(15 - 5 = 10\) g.
For Substance C: \(15 - 15=0\) g.
For Substance D: \(15 - 0=15\) g.

Step2: Compare the amounts of dissolved solute

Since the volume of water (\(30\) mL) is the same for all substances, the higher the amount of solute dissolved, the higher the concentration.
We have \(0\) g (Substance A), \(10\) g (Substance B), \(0\) g (Substance C), and \(15\) g (Substance D) of solute dissolved.

Answer:

D. Substance D