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Find the energy of the photon required to excite a hydrogen atom from the n=1 state to the n=5 state.? Can anyone help with the angle? 60.61 g of CuNO3 is dissolved in water to make a 0.200 M solution. What is the volume of the solution in liters? How many stars are there in a large globular cluster? Prove that x³+3x+14>0 for x>-2.?