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A certain radioactive isotope placed near a Geiger counter registers 160 counts per minute. Eight hours later, the counter registers 10 counts per minute. What is the half-life of the isotope
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Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?
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A certain radioactive isotope placed near a Geiger counter registers 160 counts per minute. Eight ho...
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