maynardzachary2007 maynardzachary2007 25-11-2022 Chemistry contestada 21. If the half-life of an isotope is 60 seconds, how long will it take for a 1 kg sample to decay to less than 10 g. a. About 60 half-lives b. Exactly 100 half-lives C. About 7 minutes d. Exactly 60 seconds e. About 60,000 seconds
