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Home Page Test Answers Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1.25 billion years. By measuring the amount of its decay product (argon-40) present in the rock, you conclude that there must have been 80 micrograms of potassium-40 when the rock solidified. How old is the rock? - Q/A (Question and Answer)

Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1.

Question
Suppose you find a rock that contains 10 micrograms of radioactive potassium-40, which has a half-life of 1.25 billion years. By measuring the amount of its decay product (argon-40) present in the rock, you conclude that there must have been 80 micrograms of potassium-40 when the rock solidified. How old is the rock? – Q/A (Question and Answer)
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Maddison Bailey

Test Answer

Answer:

3.75 billion years

Recource Astronomy Chapter 6 Flashcard

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What is the right structure for an essay
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A paragraph is a related group of sentences that develops one main idea. Each paragraph in the body of the essay should contain:
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  • supporting sentences to explain and develop the point you’re making
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