What Is the Energy in Joules of a Mole of Photons

question 135

Multiple Choice

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

• A)6.46 × 10^-25 J
• B)6.46 × 10^-16 J
• C)2.46 × 10^-4 J
• D)12.4 kJ
• E)246 kJ

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Definitions:

Payback Period

The duration it takes for an investment to return its original cost to the investor.

NPV

Net Present Value (NPV) is a financial metric used to evaluate the profitability of an investment or project by discounting all expected future cash flows back to their present value.

Profitability Index

A financial tool that calculates the relationship between the costs and benefits of a project by dividing the present value of future cash flows by the initial investment cost.

Mutually Exclusive

Situations or events that cannot occur at the same time—choosing one precludes the selection of the other.