Calculate the energy in kilocalorie per mol of the photons of an electromagnetic radiation of wavelength 7600Ã….

Explanation

To calculate the energy in kilocalories per mole of photons of electromagnetic radiation with a wavelength of 7600 Å, we can follow these steps:

### Step 1: Convert Wavelength to Meters
The wavelength given is 7600 Ångströms. We need to convert this to meters for our calculations.
\[ \text{Wavelength} (\lambda) = 7600 \, \text{Å} = 7600 \times 10^{-10} \, \text{m} = 7.6 \times 10^{-7} \, \text{m} \]

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