LB 171 Lecture Notes - Lecture 3: Microwave Oven, Emission Spectrum
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Please discuss and answer these problems in groups of three. Each person must write a portion of the worksheet. Suppose you want to heat water for a cup of tea. You put a mug containing 0. 250 l of water into a 2. 50 ghz microwave oven. If it takes 0. 36 kj of energy to bring 1. 00 ml of tap water up to the brewing temperature, how many moles of microwave photons will the mug of water need to absorb? (assume all the photons heat the water. ) 1 ghz = 109 1/s h = 6. 63 10 34 js. Consider three photons: a, b and c. the wavelength of photon b is twice the wavelength of. The frequency of photon c is twice the frequency of photon a. Rank the three photons in order of least-to-most energy. Name:name:name:least energymost energyone biological application of fluorescence is the use of gfp (green fluorescent protein) to tag and then visualize a protein/biological material of interest.
