The half-life of Molybdenum-93 is 4000 years. A sample of Molybdenum-93 has a mass of 10 mg. When will the mass be reduced to 1 mg?
Image Source: Virtual museum of chemical elements.
A mixture contains two radioactive elements with half lives of 800 and 1600 years respectively. If the relative proportion of radioactive elements is initially 1:1, what is their relative proportion after 1600 years?
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