Final answer:
Based on the given information, the compound on the solubility curve that would make a saturated solution is Blue Square.
Step-by-step explanation:
Based on the given information, we can identify the compound on the solubility curve that would make a saturated solution when 115 grams were dissolved in 100 grams of water at 20 degrees Celsius.
The solubility curve has four different compounds represented by different shapes and colors. To determine the compound that corresponds to the given conditions, we need to find the point on the solubility curve that lies closest to the coordinates representing 115 grams of the compound and 100 grams of water at 20 degrees Celsius.
After referring to the solubility curve, we can see that the compound represented by the Blue Square is the closest to the given conditions. Therefore, the compound that would make a saturated solution is Blue Square.