You Wish to De-Ice Your Driveway, So You Consider Buying

question 108

Multiple Choice

You wish to de-ice your driveway, so you consider buying 10 lb of NaCl, 10 lb of CaCl₂, or 10 lb of MgCl₂.Which of these would de-ice your driveway most effectively? Assume that ideal dissociation of the salts occurs and that colligative properties are the only consideration.

• A)10 lb of NaCl will de-ice best.
• B)10 lb of CaCl₂ will de-ice best.
• C)10 lb of MgCl₂ will de-ice best.
• D)The three driveways will de-ice to the same extent.
• E)10 lb of CaCl₂ or 10 lb of MgCl₂ will de-ice equally well.

---

Definitions:

Empathy

The ability to understand and share the feelings of another person from their perspective.

Just-World Hypothesis

According to Lerner and Miller, people need to believe that the world is a just place where they get what they deserve. As evidence of undeserved suffering undermines this belief, people may conclude that victims deserve their fate.

Normative Influence

An influence to conform to the positive expectation of others, to gain social approval or to avoid social disapproval.

Modelling Effect

The process by which individuals learn behaviors, norms, or attitudes by observing the actions of others, often significant in social learning theory.