What amount of energy is required to com-

pletely ionize 26.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy
of C(g) is 1086 kJ/mole?
Answer in units of J

1 answer

1086 kJ/mol x # mol = ?kJ.
How many mols do you have? That is
mols = grams/atomic mass.