Asked by Jerry
                how many half-lives of radon-222 have passed in 11.46 days?
            
            
        Answers
                    Answered by
            apalara(nigeria)
            
    1/8 =(1/2)^n  0.25=0.5^n  log0.25=log0.5^n            log0.25=nlog0.5  n=log0.25/log0.5=3:::::there4 it is 3 half-lifes
    
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