A tidal day is ________.

A. 24 hours
B. 24 hours and 50 minutes
C. 12 hours
D. 12 hours and 25 minutes
E. It depends on the day.


Answer: B

Environmental & Atmospheric Sciences

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Hydrofluoric acid, HF, is a weak acid. Which of the following is the correct expression for the Ka of hydrofluoric acid?

A) [H3O+][HF]/[F-] B) [HF]/[ H3O+][F-] C) [H3O+][F-]/[HF] D) [HF][F-]/[ H3O+]

Environmental & Atmospheric Sciences

Karst topography was named for a region located in ____

a. southern China b. Florida c. Croatia d. Japan

Environmental & Atmospheric Sciences

By definition, brackish water has a higher salinity than brine

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

The subtidal rocky bottom zone along temperate shorelines is dominated by ________

A) coralline algae B) green algae C) kelp D) Thalassia E) Zostera

Environmental & Atmospheric Sciences