Question: This is a 2 part question, Scientists believe that Earth once had 9 trillion tons of a naturally existing plutonium isotope (back when the Earth

This is a 2 part question,

Scientists believe that Earth once had 9 trillion tons of a naturally existing plutonium isotope (back when the Earth was formed). Given a half-life of 26,000 years to V that specific plutonium isotope and the Earth's current age of 4.6 billion years, how much would remain today? Use your answer to explain why this isotope is not found naturally on Earth today. The remaining amount after 4.6 billion years will be ton(s). (Round to three decimal places as needed.)

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