Question

Two sets of students engaged in a competition to determine which group could achieve the fastest dissolution of 5 grams of salt in 50 mL of water. The table illustrates the techniques they employed.
Group X
Step 1: measured 50 mL of water into 200 mL graduated cylinder
Step 2: added 5 grams of salt with a cup
Step 3: stirred gently for 1 minute
Step 4: recorded the time with a stopwatch
Group Y
Step 1: measured 50 mL of water into 100 mL graduated cylinder
Step 2: added 5 grams of salt with a spoon
Step 3: stirred vigorously for 1 minute
Step 4: recorded the time with a wrist watch
Which group is presumed to have achieved a quicker dissolution of the salt?

(1 point)
Responses

group Y because they stirred the water vigorously
group Y because they stirred the water vigorously

group X because they used a cup to add the salt
group X because they used a cup to add the salt

group X because they used a larger cylinder
group X because they used a larger cylinder

group Y because they used a wristwatch to record time

Answer 1

The correct response is:

**group Y because they stirred the water vigorously.**

Stirring vigorously increases the agitation in the solution, which can help dissolve the salt more quickly compared to stirring gently.