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.
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
1 answer