Chemistry
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Science Bowl Question

📅 NSB 2015🎓 HS🔄 Round 11#️⃣ Q5❓ TOSS-UP📝 Multiple Choice

A supersaturated solution of sodium nitrate was prepared at 80 degrees Celsius but cooled to room temperature. Which of the following statements describes the addition of a seed crystal?

W) Delta H is negative and Delta S is negative
X) Delta H is positive and Delta S is negative
Y) Delta H is negative and Delta S is positive
Z) Delta H is positive and Delta S is positive
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