Consider a Lake That Is Uniformly 10°C

question 1

Multiple Choice

Consider a lake that is uniformly 10°C. What happens to the oxygen-rich surface water as it cools down to ?

• A) The oxygen gets squeezed out as the microcrystals form.
• B) Its rate of evaporation decreases which has the effect of increasing the oxygen concentration.
• C) It grows less dense and remains at the surface.
• D) It grows more dense and sinks towards the bottom.

---

Definitions:

(2R,4R)-2,4-dibromopentane

A chiral compound with a specific configuration, indicating the presence of bromine atoms on the second and fourth carbon of a five-carbon chain.

Fischer Projection

A method of drawing organic molecules by projecting a three-dimensional molecule onto a two-dimensional plane.

Diastereomers

Stereoisomers that are not mirror images of each other, having two or more stereocenters and differing in the configuration at one or more of these centers.

Enantiomers

Molecules that are mirror images of each other but cannot be superimposed, similar to right and left hands, often displaying different properties in biological systems.