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Suppose that the microwave radiation has a wavelength of 11.2cm. How many photons are required to heat 215mL of coffee from 25.0 C to 62.0C

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Suppose that the microwave radiation has a wavelength of 11.2cm. How many photons are required to heat 215mL of coffee from 25.0 C to 62.0C ? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184J/(gK), as water over this temperature range. Express the number of photons numerically

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