Hydrocyanic acid, HCN, is a weaker acid than ammonium ion, NH4+. When hydrocyanic acid reacts with ammonia, NH3, what species are present in the solution in the largest amount?
A) hydrocyanic acid, HCN, and ammonia, NH3
B) hydrocyanic acid, HCN, and ammonium ion, NH4+
C) cyanide ion, CN-, and ammonia, NH3
D) cyanide ion, CN-, and ammonium ion, NH4+
A
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A) transnational migration B) circular migration C) chain migration D) familial migration E) reverse migration
When population growth slows as a population reaches the habitat's carrying capacity, the population has grown ________. This type of growth is typically seen in ________.
A. logistically; unstable habitats B. logistically; stable habitats C. exponentially; unstable habitats D. exponentially; stable habitats
The absence of a Coriolis force
A) prohibits hurricane formation in most of the tropics. B) prohibits hurricane formation between 10° and 20° latitude. C) prohibits hurricane formation between 30° and 40° latitude. D) prohibits hurricane formation at the equator.
Volcanic eruptions can trigger lahars that may occur long after the volcanic activity has ceased. The simplest definition of a lahar is?
A) magma movement B) a snow avalanche C) a debris flow D) a flood