Ethylene Glycol Is Used in Automobile Radiators as an Antifreeze

question 14

Multiple Choice

Ethylene glycol is used in automobile radiators as an antifreeze. What will the freezing point of an antifreeze solution be if 2.5 L of ethylene glycol are mixed together with 2.5 L of water? The following information may be helpful to you. Ethylene glycol has a very low vapor pressure and is essentially nonvolatile.
Molar mass of ethylene glycol =62.1 g/mol
Van 't Hoff factor = 1
Density of ethylene glycol =1.11 g/mL
Density of water=1.00 g/mL
K_f for water =1.86°C kg/mol

• A) -39°C
• B) -16°C
• C) -1.6°C
• D) -33°C
• E) -24°C

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Definitions:

Contact Hypothesis

A theory suggesting that under appropriate conditions intergroup contact is one of the most effective ways to reduce prejudice between majority and minority group members.

Intergroup Relations

Refers to the interactions and relationships between groups, including their dynamics, conflicts, and cooperation.

Positive Contact

Interactions between different groups that are cooperative and pleasant, aimed at reducing prejudices and improving intergroup relations.

Power Distance

A cultural dimension that reflects the extent to which inequalities and hierarchical differences are accepted and endorsed by individuals and groups within a society.