Answer:
101.35 g
Explanation:
The balanced equation for the reaction is:
2KClO3 ----> 2KCl + 3O2
So 2 moles of KClO3 produces 3 moles of Oxygen
Using the molar masses:
245.09 g KClO3 produces 95.994 g of oxygen.
258.77 g produces 95.994 * 258.77 / 245.09 = 101.35 g (answer).
