Chemistry, 27.04.2021 21:00, sarahelisabeth444

strontium-90 has a half life of 29 years. if a site held 4000 kg of this isotope, approximately what mass of strontium-90 would be left after 87 years?

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strontium-90 has a half life of 29 years. if a site held 4000 kg of this isotope, approximately what...