A Rock Contains 0 $\rarr$ ²⁰⁶Pb Is 4

question 68

Multiple Choice

A rock contains 0.37 mg of Pb-206 and 0.95 mg of U-238. Approximately how many U-238 atoms were in the rock when it was formed billions of years ago (The half life for ²³⁸U $\rarr$ ²⁰⁶Pb is 4.5 * 10⁹ yr.)

• A) 1.32 atoms
• B) 5.8 * 10^-6 atoms
• C) 2.4 * 10¹⁸ atoms
• D) 3.5 * 10¹⁸ atoms
• E) 3.5 * 10²¹ atoms

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Definitions:

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Challenges and conflicts related to an individual's sense of self and personal identity, which can include ethnicity, gender, and cultural background.

Distributive Bargainer

A negotiator focused on dividing limited resources in a way that maximizes their own gain.

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A conflict resolution approach where parties work together to find a mutually beneficial solution, emphasizing cooperation over competition.