how many moles of KC1 will be produced from 89.0g of KC1O3

Answer 1

Assuming you meant KCl (potassium chloride) instead of KC1, and KClO₃ (potassium chlorate) instead of KC1O3; the answer would be:

Moles of KClO₃ = 89.0g KClO₃ x (1mol KClO₃/122.55 g KClO₃) = 0.7262 mol KClO₃

Note: From the formula, KClO₃, it means in every 1 mol of KClO₃, there is 1 mol of KCl, thus;

Moles of KCl = 0.7262 mol KClO₃ x (1mol KCl/1mol KClO₃) = 0.7262 = ~ 0.73 mol KCl

Answer 2

Is the KC1 meant to be KCl as in potassium chloride?