Find the energy of $1$ mole of photons having a frequency of $5 \times 10^{10} \ s^{-1}$. $(h = 6.62 \times 10^{-34} \ J \ s)$
- A$3.98 \times 10^{-23} \ J$
- B$3.98 \times 10^{1} \ J$
- C$3.98 \times 10^{-14} \ J$
- D$3.98 \times 10^{-1} \ J$
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