A Sample of a Radioactive Isotope Is Found to Have

question 15

Multiple Choice

A sample of a radioactive isotope is found to have lost 14.0% of its original activity after 8.67 days.What is the rate constant for decay of this isotope?

• A) 0.0174 d^-1
• B) 0.227 d^-
• C) 1.31 d^-1
• D) 0.0151 d^-1
• E) 0.514 d^-1

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Definitions:

Black Fraternal Organization

A group or society formed by African Americans that provides social support, community service, and brotherhood or sisterhood among its members.

African Masonic Lodge

Fraternal organizations within the African American community, providing social networking, community service, and sometimes acting as a forum for political organizing.

African Methodist Episcopal Church

A historic black church established in the United States, part of the larger Methodist Episcopal tradition.

Segregated Seating Policy

A discriminatory practice of separating people in public places based on race, often found in theaters, transportation, and schools, mainly prior to the civil rights movements.