Calcium Oxide Reacts with Water in a Combination Reaction to Produce

question 143

Multiple Choice

Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H₂O (l) → Ca(OH) ₂ (s)
A 3.50 g sample of CaO is reacted with 3.38 g of H₂O.How many grams of water remain after completion of reaction?

• A)0.00
• B)0.00694
• C)2.25
• D)1.04
• E)0.125

---

Definitions:

Vasa Vasorum

Small vessels distributed to the outer and middle coats of larger blood vessels.

Arteries

Blood vessels that carry blood away from the heart to various parts of the body.

Veins

Blood vessels that carry blood towards the heart, typically carrying deoxygenated blood from the tissues back to the heart, except for pulmonary and umbilical veins.

Elastic Vessels

Blood vessels, such as arteries, that contain elastic fibers in their walls allowing them to stretch and recoil, aiding in the maintenance of blood pressure.