Given That CaO(s) + H₂O(l) → Ca(OH)₂(s), ΔH°_rxn = -64

question 136

Multiple Choice

Given that CaO(s) + H₂O(l) → Ca(OH) ₂(s) , ΔH°_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) 454 g
• D) 606 g
• E) 3.40 × 10⁴ g

---

Definitions:

Maxilla

One of the pair of bones forming the upper jaw in humans and most vertebrates, holding the upper teeth.

Zygomatic

Pertaining to the cheekbone or zygoma, a bone on the side of the skull forming the prominence of the cheek.

Lacrimal

Associated with the production of tears or the tear glands.

Ethmoid

A complex bone in the skull located between the eyes and nasal cavities, contributing to the nasal cavity's structure and involved in smell sensation.