You question has slipped below the "more" label at the end of the posts so I've recopied it here.
https://www.jiskha.com/questions/1856771/how-would-i-calculate-the-total-moles-of-triiodide-in-a-solution-with-vitamin-c
https://www.jiskha.com/questions/1856771/how-would-i-calculate-the-total-moles-of-triiodide-in-a-solution-with-vitamin-c