Posted by **Sarah** on Wednesday, November 14, 2012 at 6:29pm.

What is the energy in Joules of a mole of photons of microwave light having a frequency typical of microwave? (frequency = 3.0 x 10^9 Hz)

I tried using the equation E= h x frequency, but I ended up with the answer 1.98 x 10^-24 instead of the correct answer 1.2 J, so there must be another step that I'm missing.

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