19. In the reaction between 17.0 g of methane with chlorine, carbon tetrachloride and hydrochloric acid are produced. What mass of hydrogen chloride is produced?
CH, +4 Cl2 → CCM + 4HCI

Based on the equation and the information in the table, what is the enthalpy of the reaction?

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Chemistry worksheet - i am not sure what they are asking for exactly?