Chemistry, 28.07.2019 15:00 HeroicEddie

If a 900.0-g sample of radium-226 decays to 225.0 g of radium-226 remaining in 3,200 years, what is the half-life of radium-226?

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If a 900.0-g sample of radium-226 decays to 225.0 g of radium-226 remaining in 3,200 years, what is...

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