An atom emits a photon of light with an energy of 226.4 kJ/mol. What region if the visible light spectrum is this? (In order to find it - wavelength must be calculated). Please show work! First correct answer gets -est!

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.