A Pure Sample of ²²⁶Ra Contains 2

question 11

Short Answer

A pure sample of ²²⁶Ra contains 2.0 × 10¹⁴ atoms of the isotope. If the half-life of ²²⁶Ra = 1.6 × 10³ years, what is the decay rate of this sample? (1 Ci = 3.7 × 10¹⁰ decays/s)

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Definitions:

Patterns and Variations

Regularities and differences found in data or phenomena, often analyzed to understand trends, relationships, or underlying causes.

Coding and Quantifying

The process of categorizing qualitative data into quantitative form, allowing for numerical analysis and statistical assessment.

Metalingual Function

One of Jakobson’s semiotic functions. Establishes the agreed-upon meaning for words—for example, by establishing that Rose refers to the name of a girl, not a flower.

Agreed Meaning

Shared understanding among individuals or groups about the interpretation of a term or concept.