A particular microwave oven delivers 900 watts (exact value). (A watt is a unit of power, which is the joules of energy delivered, or used, per second.) If the oven uses microwave radiation with a wavelength of 11.9 cm, how many photons of this radiation are required to heat 1.00 g of water by 1.00°C, assuming that all of the photons are absorbed? The specific heat of water is 4.18 J/g⋅°C at 25°C.



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