Question

Calculate how many grams of O2(g) can be produced from heating 37.0 grams of KClO3(s).

Formula: 2KClO3 = 2KCl + 3O2

Answer 1

determine the moles of KClO3 (mass/molemass)

then multiply that by 3/2, that is the moles of oxygen you get.

Then, convert those moles O2 to grams O2