Question 1 options:
Radioactivity is caused by the decay of the nucleus which occurs when unst...
Chemistry, 05.05.2020 00:15 ladawnrowles005
Question 1 options:
Radioactivity is caused by the decay of the nucleus which occurs when unstable nuclei lose protons and neutrons. This quiz will look at the time it takes for a specific amount of radioactive material to decay, which is measured in a unit called half-life.
If you are given the half-life for the decay of a particular radioisotope, then you can calculate how much of that radioisotope remains after several half-lives:
fraction remaining (FR) = 1/2n
where n=number of half-lives
Knowing this, what is the fraction equivalent of 2 half-lives?
Answers: 1
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Compare and contrast physical changes with chemical changes.
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An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum
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7. in the cycle, a virus integrates its dna into the host's dna, and its dna is replicated when the host dna is replicated. a. infectious b. retroviral c. lysogenic d.lytic
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