An Alka-Seltzer antacid tablet bubbles vigorously when placed in water but only slowly when placed in an alcoholic beverage of the same temperature containing a 50:50 mix of alcohol and water
Propose a probable explanation involving the relationship between the speed of a reaction and molecular collisions. A) The alcohol absorbs the carbon dioxide bubbles before they escape the liquid phase.
B) Alcohol molecules are more massive than water molecules, hence they move slower and their collisions are not as forceful.
C) The tablet reacts with water but not the alcohol.
D) In a 50 : 50 mix there are fewer water molecules for the antacid molecules to collide with.
D
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The Convention on Biological Diversity is an international treaty
A) ratified by the United States to globally limit the loss of biodiversity. B) ratified by the United States to limit the international trade of endangered species. C) that aims to conserve biological diversity worldwide but has not been ratified in the United States. D) that would purchase all endangered species habitats in the world but has not been ratified in the United States.
Compared to the private automobile, public transportation offers more
A) energy efficiency. B) flexibility. C) pollution. D) privacy. E) range.
Which of the following gives the correct order for the energies of portions of the electromagnetic spectrum?
A) radio > infrared > ultraviolet B) radio > ultraviolet > infrared C) ultraviolet > infrared > radio D) ultraviolet > radio > infrared
Stanley Miller's 1952 experiment created ________ from the chemical ingredients thought to exist in Earth's early ocean
A) simple organic compounds B) complex organic molecules C) Deoxyribonucleic acid (DNA) D) primitive bacteria