Uranium-235 Has a Half-Life of 7 $\times$ 10⁸ Years $\times$ 10⁵ Yr
B) 1

question 65

Multiple Choice

Uranium-235 has a half-life of 7.04 $\times$ 10⁸ years.How many years will it take for 99.9% of a U-235 sample to decay?

• A) 7.0 \(\times\) 10⁵ yr
• B) 1.0 \(\times\) 10⁶ yr
• C) 4.7 \(\times\) 10⁹ yr
• D) 4.9 \(\times\) 10⁹ yr
• E) 7.0 \(\times\) 10⁹ yr

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Definitions:

Hippocampus

A major component of the brain involved in memory formation and spatial navigation, located in the medial temporal lobe.

Memory Function

The processes involved in encoding, storing, and retrieving information.

Hindsight Bias

The tendency to believe, after an event has occurred, that one would have foreseen or predicted the outcome.

Egocentric

Having or regarding the self or the individual as the center of all things.