Given That CaO(s)+ H₂O(l) $\rarr$ Ca(OH)₂(s) $\Delta$ H°_rxn = -64

question 57

Multiple Choice

Given that CaO(s) + H₂O(l) $\rarr$ Ca(OH) ₂(s) , $\Delta$ 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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