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OpenStudy (anonymous):
half life of 14^C is 5730 years. all radioactive decay is first order. Measurements indicate the scrolls contain 79.5% of Carbon-14. How old are these scrolls? I am lost I plugged in the 5730 into the half rate law to get the constant 1.21*10^-4 I still cant find out how to find the answer though. would I just keep dividing till I can add up 79.5%?
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