A Sample of Phosphorus-32 Is Found to Have an Activity

question 71

Multiple Choice

A sample of phosphorus-32 is found to have an activity of 885 disintegrations per hour (dph) .After 25 hours the activity has decreased to 841 dph.What is the rate constant for the decay of phosphorus-32?

• A) 0.0038 hr^-1
• B) 0.0020 hr^-1
• C) 0.15 hr^-1
• D) 490 hr^-1
• E) 0.12 hr^-1

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Definitions:

Carrying Capacity

The largest number of individuals of a species that can be supported indefinitely by an environment, considering the availability of essential resources such as food, living space, water, and other requirements.

Unlimited Economic Growth

The concept that an economy can grow indefinitely without encountering significant environmental or resource limitations.

Economists

Professionals who study the production, distribution, and consumption of goods and services, focusing on how economies work and how economic policies affect societal well-being.

Ecologically Sustainable Development

A process of developing in a manner that does not deplete natural resources, ensuring environmental health and resilience for future generations.