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Question
This illustration shows that after two half-lives, ____ percent of the parent radioisotope has decayed.
a. 100
b. 75
c. 50
d. 25
e. 0
Answer
This answer is hidden. It contains 1 characters.
Related questions
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A __________ is a term given to a macromolecule (large molecule) made up of individual subunits.
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Glucose and fructose
a. form rings with the same number of carbon atoms.
b. both have two oxygen atoms as part of their ring structure.
c. are alike in that both have identical functional groups.
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Fructose and glucose are
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Q:
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a. it is not found in the earth's crust.
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Q:
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b. behave the same chemically and physically but differ biologically from other isotopes.
c. are the same physically and biologically but differ from other isotopes chemically.
d. have the same number of protons but a different number of neutrons.
e. are produced when atoms lose electrons.
Q:
Which is the smallest unit of an element that retains the properties of the element?
a. atom
b. compound
c. ion
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e. mixture
Q:
The ability of a solution to resist changes in pH depends on its ______________.