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ACT Science Practice Questions - ACT Science Section (Enhanced ACT 2025) Exam

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Table 1 shows the solubility of four salts (in grams per 100 mL of water) at three temperatures: Salt | 20°C | 40°C | 60°C NaCl | 35.7 | 36.6 | 37.3 KNO3 | 31.6 | 63.9 | 110.0 Na2SO4 | 19.5 | 48.8 | 45.3 KCl | 34.0 | 40.0 | 45.5 Which salt shows the greatest increase in solubility between 20°C and 60°C?
Correct Answer:
KNO3

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