A Sample Containing a 50/50 Mixture of Water and D₂O

question 6

Multiple Choice

A sample containing a 50/50 mixture of water and D₂O (1:1 D₂O:H₂O) is placed in a vial and sealed. The liquid/vapor system is allowed to come to equilibrium at room temperature. What will be the relative concentration ratio of the remaining liquid?

• A) there will be more D₂O than H₂O
• B) there will be less D₂O than H₂O
• C) Still 1:1
• D) Indeterminate
• E) none of the above

---

Definitions:

Fight-Or-Flight Response

A physiological reaction that occurs in response to a perceived harmful event, attack, or threat to survival.

General Adaption Syndrome

A theoretical framework describing the body's short-term and long-term reactions to stress, including stages of alarm, resistance, and exhaustion.

Stressor

Any event, experience, or environmental stimulus that causes stress in an individual.

Emotional Catharsis

The process of releasing and thereby providing relief from strong or repressed emotions through particular activities or experiences, such as art, music, or therapy.