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17 Nov 2019
Every radioactive isotope decays at a certain rate It is never known when a given nucleus will decay, but if many nuclei are gathered together, as a group they will decay at a measurable and consistent rate A radioactive half-life Is the time it will lake for half of the nuclei to decay Phosphorus 32 has a half life of 14 0 days. Starling with 6 00 g of^32P, how many grams will remain after 70 days? Express your answer numerically in grams. Carbon-14 has a half-life of 5736 years. In a plant fossil you find that the^14C has decayed to 1/6 0 of the original amount. How long ago was this plant alive? Express your answer numerically in years.
Every radioactive isotope decays at a certain rate It is never known when a given nucleus will decay, but if many nuclei are gathered together, as a group they will decay at a measurable and consistent rate A radioactive half-life Is the time it will lake for half of the nuclei to decay Phosphorus 32 has a half life of 14 0 days. Starling with 6 00 g of^32P, how many grams will remain after 70 days? Express your answer numerically in grams. Carbon-14 has a half-life of 5736 years. In a plant fossil you find that the^14C has decayed to 1/6 0 of the original amount. How long ago was this plant alive? Express your answer numerically in years.
Lelia LubowitzLv2
17 Nov 2019