請問電離能相關計算

[糖果=) 10]

題目:How much energy, in joules, must be absorbed to convert to Na+ all the atoms present in 1.00 mg of gaseous Na? The first ionization energy of Na is 495.8 kJ>mol.

不會算..網路也搜了電離能相關的可是還是不懂..求高手解答!!感謝不盡;-)

[清楓 10]

0.001/23*495.8≒0.021557KJ=21.557J

[糖果=) 10]

0.001/23*495.8≒0.021557KJ=21.557J

感榭大大幫忙!!搞懂了!!謝謝^^