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stiv31 [10]
3 years ago
11

How are radioactive isotopes used to date rocks? ...?

Biology
1 answer:
Stolb23 [73]3 years ago
8 0
Some isotopes, however, decay slowly, and several of these are used as geologic clocks. Dating rocks by these radioactive timekeepers is simple in theory, but the laboratory procedures are complex. <span>All methods rely on the fact that certain elements (particularly uranium and potassium) contain a number of different isotopes whose half-life is exactly known and therefore the relative concentrations of these isotopes within a rock or mineral can measure the age.</span>
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morpeh [17]
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8 0
3 years ago
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Jordan is working with a 50% stock concentration of Windex. She decides to add 500 µL of bacteria to a tube containing 1 mL of n
Lady bird [3.3K]

33% is the unknown concentration of the tube.

Explanation:

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4 0
3 years ago
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vova2212 [387]

Answer:

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Answer:

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3 years ago
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