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2. The level of thorium

Thorium-229 is the radioactive substance that gives lantern mantels their eerie glow. The half life of thorium-229 is 7340
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The level of thorium in a sample decreases by a factor of one-half every 2 million years. A meteorite is discovered to have only
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2. asked by Mario
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The level of thorium in a sample decreases by a factor of one-half every 4.2 million years. A meteorite is discovered to have
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2. asked by south
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2. The level of thorium in a sample decreases by a factor of one-half every 2 million years. A meteorite is discovered to have
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2. asked by sara
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Thorium-232 undergoes a series of radioactive decay by emitting energy and small particles from the atomic nucleus. Which could
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Thorium-232 undergoes alpha decay and has a half-life of 1.4 * 10^10 years. How long will it take for a 1.00mg sample of
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2. asked by John
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The mass m(t) remaining after t days from a 70 g sample of thorium-234 is given by the equation shown below.m(t) = 70e-0.0274t
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2. asked by Anonymous
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how many more neutrons does thorium-230 have then protons? how many electrons does thorium-230 have?
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2. asked by monique n
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Thorium-234 has a half-life of 24.1 days.How much of a 100-g sample of thorium-234 will be unchanged after 48.2 days? 75 g 50 g
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An Initial amount of 100 grams of Thorium-234 decays according to the model: dP/dt=-0.02828P (where t is measured in years).a)
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2. asked by RC
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