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The Isotope Has a Half-Life of 5,715 Years

question 2

Multiple Choice

The isotope The isotope has a half-life of 5,715 years. After 2,000 years, a sample of the isotope is reduced to 1.2 grams. What was the initial size of the sample (in grams) ? How much will remain after 20,000 years (i.e., after another 18000 years) ? Round your answers to four decimal places. A) 1.0706 , 0.0947 B) 2.4471 , 0.2164 C) 1.5294 , 0.1352 D) 2.1412 , 0.1893 E) 1.9883 , 0.1758 has a half-life of 5,715 years. After 2,000 years, a sample of the isotope is reduced to 1.2 grams. What was the initial size of the sample (in grams) ? How much will remain after 20,000 years (i.e., after another 18000 years) ? Round your answers to four decimal places.

Definitions:

Decategorization

A strategy for reducing prejudice by encouraging individuals to perceive others as individuals rather than as members of a group.

Recategorization

A cognitive process that involves changing the classification or grouping of information, often to reduce intergroup bias.

Dehumanization

The process of depriving a person or group of positive human qualities, leading to the perception of them as less than human.

Cross-Categorization

Cross-Categorization is the practice of classifying individuals or items into multiple overlapping categories or groups based on different attributes.