Calculate how many grams of O2(g) can be produced from heating 65.8 grams of KClO3(s).

Answer 1

2KClO3>>3O2+2KCl

so for every mole of KClO3, you get 3/2 mole O2

figure moles of KClO3, multiply by 3/2, then multiply by 32 to get grams oxgen gas.