A 100 G Sample of Carbon Taken from a Fossilized Plant

question 31

Multiple Choice

A 1.00 g sample of carbon taken from a fossilized plant has an activity of 0.19 atoms/s.What mass of ${ }_{6}^{14} \mathrm{C}$ is present? The decay constant of ${ }_{6}^{14} \mathrm{C}$ is 3.8 × 10?¹² s?¹.

• A) 4.6 × 10?³⁴ g
• B) 5.0 × 10?¹⁴ g
• C) 1.2 × 10?¹² g
• D) 6.1 × 10?¹² g
• E) 3.2 × 10?¹¹ g

---

Definitions:

Net Income

The total profit of a company after all expenses, including taxes and operational costs, have been deducted from total revenues.

Up-front Costs

Initial expenses required to start a project, product, or service before any financial return is seen.

Discounted Payback Period

The time required to recoup the cost of an investment while considering the time value of money, typically shorter than simple payback period.

Required Return

The least profit anticipated by an investor from an investment in a certain asset, given its risk profile.