Calculate the energy change in kilojoules per mole when lithium atoms lose an electron to bromine atoms to form isolated Li and Br- ions. [The Ei for Li(g) is 520 kJ/mol; the Eea for Br(g) is -325 kJ/mol.]

Calculate the energy needed to convert three moles of sodium atoms in the gaseous state to sodium ios. The ionization energy of sodium is 495 kJ mol^(-) .

Calculate the energy in joules required to convert all the atoms of sodium to sodium ions present in 2.3 mg of sodium vapours? Ionization enthalpy of sodium is 495 kJ "mol"^(-1 ) (Atomic mass of Na = 23)

Compute the heat of formation of liquid methyl alcohol in kilo joules per mole using the following data : Heat of vaporisation of liquid methyl alcohol : 38 kJ/mol. Heat of formation of gaseous atoms from the elements in their standard states : H = 218 kJ/mol, C = 715 ("kJ")/("mol")= and O = 249 ("kJ") /("mol") . Average bond energies, C - H = 415 kJ/mol, C - O = 356 (kJ)/(mol) and O-H = 436 (kJ)/(mol).

The ionisation energy of Li is 500 KJ/mole. The amount of energy required to convert 70 mg of Li atoms required to convert 70 mg of Li atoms in gaseous state into Li^(+) ion (in KJ) is

How many joules of energy must be absorbed to convert Li to Li^(+) , all the atoms present in 1.00 mg of gaseous Li ? lE_(1) of Li is 520.3 kJ mol^(-1)(Li=7) .

The net enthalpy change of a reaction is the amount of energy required to break all the bonds in reactant molecules minus amount of energy required to form all the bonds in the product molecules.What will be the enthalpy change for the following reaction. H_(2)(g) + Br_(2)(g) to 2HBr(g) Given that bond energy of H_(2), Br_(2) and HBr is 435 kJ mol^(-1) , 192 kJ mol^(-1) and 368 kJ mol^(-1) respectively.