Krypton 85 gas leaks into the reactor room of an electric power plant. Its half-life is 10 years. How long is it before 99.9% of the krypton decays?
Enter your answer as just a real number rounded to one decimal place (no units).

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The Answer of Krypton 85 gas leaks into the reactor room of an electric power plant. Its half-life is 10 years. How long is it before 99.9% of the krypton decays?
Enter your answer as just a real number rounded to one decimal place (no units).

Krypton 85 Gas Leaks into the Reactor Room of an Electric