To determine which cup will have the greatest change in temperature after adding the ice, we need to consider the mass of ice added to each cup. The cup with the greater mass of ice will generally cause a greater change in temperature of the water because it will absorb more heat as it melts.
Looking at the amounts of ice added:
- Cup 1: 22.1 grams
- Cup 2: 105.3 grams
- Cup 3: 19.0 grams
- Cup 4: 58.0 grams
Cup 2 has the largest mass of ice added (105.3 grams). Therefore, Cup 2 will have the greatest change in temperature.
The answer is: 2.