A photon of 498NM was emitted from a silicon atom. Calculate the energy of lol the atomic levels of silicon and show that the atomic levels are quantized

The first element on the periodic table of elements is carbon. a. true b. false

Kc = 0.040 for the system below at 450oc. if a reaction is initiated with 0.40 mole of cl2 and 0.40 mole of pcl3 in a 2.0 liter container, what is the equilibrium concentration of cl2 in the same system? pcl5(g) ⇄ pcl3(g) + cl2(g)

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?