Asked Jan 29, 2019

A 6.00 mL ampule of a 0.110 M solution of naphthalene in hexane is excited with a flash of light. The naphthalene emits 19.9 J of energy at an average wavelength of 349 nm. What percentage of the naphthalene molecules emitted a photon?


Expert Answer

Step 1

Molarity is defined as moles per liter. So, number of moles and hence the number of molecules in 0.110 M solution can be calculated as:

Step 2

The number of molecules(x) in the emission can be calculated as:

Step 3

Percentage of number of molec...


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