Multiple Choice 50 questions

Example Questions

____ 1. Carbon dioxide is less soluble in hot water than in cold water.

a. true

b. false

____ 2. Calculate the energy released when 49.6 g Na2O reacts in the following reaction.

Na2O(s) + 2HI(g) → 2NaI(s) + H2O(l)

ΔH = –120.00 kcal

a. 0.414 kcal

b. 96.0 kcal

c. 4.22kcal

____ 3. Why is a nonpolar substance able to dissolve a different nonpolar substance?

a. They have similar attractive forces in their molecules.

b. They combine to produce a polar substance.

c. There is no attractive force between them.