4. The solubility of an unknown substance was tested during an experiment. Based on the solubility curve information and the results of the experiment, what is most likely the identity of the unknown solute? 555 3 3 3 2 Solubility (grams of solute/100 g H₂O) 110 120 0 10 20 30 40 50 Temperature ('CI NaNO3 KNO Mass of Unknown Solute That Dissolves in 100 g Water Trial 30°C 40°C 50°C 1 46.0 g 63.2 g 80.2 g 2 45.9 g 61.4 g 81.3 g KCI 3 44.3 9 62.9 g 79.8 g NaCl Average 45.4 g 62.5 g 80.4 g 70 1100
