Heated lithium atoms emit photons of light with an energy of 2.961 * 10-19 j. what is the energy of 1.00 mol of these photons?

Energy of Photon emitted by heated lithium atom E = 2.961 Ă - 10â’19 J We need energy for only one mole of photons n = 1 Total photons in one mole = 6.022x10^23 photons / mole Total Energy = n x h x E = > 1 x 6.022x10^23 x 2.961 Ă - 10^â’19 Total Energy = 1.783x10^5 J