What do scientists use molecular clocks to estimate?
a. the age of fossilized remains...
What do scientists use molecular clocks to estimate?
a. the age of fossilized remains found in an archeological dig.
b how long it will take for a molecule to break down into individual atoms
c how long ago various groups of organisms diverged evolutionarily from one another
d the rate at which a chemical reaction will occur at a given temperature and pressure
Answers: 3
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Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%
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What are the first three quantum numbers for the electrons located in subshell 2s?
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What is the independent variable in this investigation? mass volume sample number substance density
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According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.
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