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Why when copper (II) oxide is mixed with sulfuric acid it changes color from black to blue when heated? A photon has a wavelength of 293 nm. Calculate the energy of the photon in joules. Enter your answer in scientific notation.? A) A polar curve is given by r = 3/2-cosθ. The slope of the curve at θ = pi/2 is
Please Help!? Can pizza have a boiling point? Not good with formula and math what would be the correct answer?