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Chemistry
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OpenStudy (anonymous):
a sample of material has 40000 radioactive particles today, your father measured 80000, 40 years later, what will it be in 40 years and 80 years. I do not know what decay to use to solve this problem
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OpenStudy (jfraser):
40,000 and 80,000 are nice, round, related numbers, aren't they?
OpenStudy (anonymous):
thats not helpful
OpenStudy (jfraser):
how much is 40,000 compared to 80,000? I think it's quite helpful
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