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    Chemistry Study Set 2
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    Exam 6: Thermochemistry
  5. Question
    Given That CaO(s)+ H<sub>2</sub>O(l)\(\rarr\) Ca(OH)<sub>2</sub>(s)\(\Delta\) H°<sub>rxn</sub> = -64
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Given That CaO(s)+ H2O(l) →\rarr→ Ca(OH)2(s) Δ\DeltaΔ H°rxn = -64

Question 57

Question 57

Multiple Choice

Given that CaO(s) + H2O(l) →\rarr→ Ca(OH) 2(s) , Δ\DeltaΔ H°rxn = -64.8 kJ/mol, how many grams of CaO must react in order to liberate 525 kJ of heat?


A) 6.92 g
B) 56.1 g
C) 455 g
D) 606 g
E) 3.40 × 104 g

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